multi: move PaymentCreationInfo to payment pkg

diff --git a/channeldb/payments.go b/channeldb/payments.go
deleted file mode 100644
index 2543c9d..0000000
--- a/channeldb/payments.go
+++ /dev/null
@@ -1,37 +0,0 @@
-package channeldb
-
-import (
-	"fmt"
-	"time"
-
-	"github.com/lightningnetwork/lnd/lntypes"
-	"github.com/lightningnetwork/lnd/lnwire"
-)
-
-// PaymentCreationInfo is the information necessary to have ready when
-// initiating a payment, moving it into state InFlight.
-type PaymentCreationInfo struct {
-	// PaymentIdentifier is the hash this payment is paying to in case of
-	// non-AMP payments, and the SetID for AMP payments.
-	PaymentIdentifier lntypes.Hash
-
-	// Value is the amount we are paying.
-	Value lnwire.MilliSatoshi
-
-	// CreationTime is the time when this payment was initiated.
-	CreationTime time.Time
-
-	// PaymentRequest is the full payment request, if any.
-	PaymentRequest []byte
-
-	// FirstHopCustomRecords are the TLV records that are to be sent to the
-	// first hop of this payment. These records will be transmitted via the
-	// wire message only and therefore do not affect the onion payload size.
-	FirstHopCustomRecords lnwire.CustomRecords
-}
-
-// String returns a human-readable description of the payment creation info.
-func (p *PaymentCreationInfo) String() string {
-	return fmt.Sprintf("payment_id=%v, amount=%v, created_at=%v",
-		p.PaymentIdentifier, p.Value, p.CreationTime)
-}
diff --git a/lnrpc/routerrpc/router_server_test.go b/lnrpc/routerrpc/router_server_test.go
index ce513d5..70e3fbd 100644
--- a/lnrpc/routerrpc/router_server_test.go
+++ b/lnrpc/routerrpc/router_server_test.go
@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/btcsuite/btcd/btcec/v2"
-	"github.com/lightningnetwork/lnd/channeldb"
 	graphdb "github.com/lightningnetwork/lnd/graph/db"
 	"github.com/lightningnetwork/lnd/lnrpc"
 	"github.com/lightningnetwork/lnd/lnwire"
@@ -131,11 +130,11 @@ func TestTrackPaymentsInflightUpdates(t *testing.T) {
 
 	// Enqueue some payment updates on the mock.
 	towerMock.queue.ChanIn() <- &paymentsdb.MPPayment{
-		Info:   &channeldb.PaymentCreationInfo{},
+		Info:   &paymentsdb.PaymentCreationInfo{},
 		Status: paymentsdb.StatusInFlight,
 	}
 	towerMock.queue.ChanIn() <- &paymentsdb.MPPayment{
-		Info:   &channeldb.PaymentCreationInfo{},
+		Info:   &paymentsdb.PaymentCreationInfo{},
 		Status: paymentsdb.StatusSucceeded,
 	}
 
@@ -193,11 +192,11 @@ func TestTrackPaymentsNoInflightUpdates(t *testing.T) {
 
 	// Enqueue some payment updates on the mock.
 	towerMock.queue.ChanIn() <- &paymentsdb.MPPayment{
-		Info:   &channeldb.PaymentCreationInfo{},
+		Info:   &paymentsdb.PaymentCreationInfo{},
 		Status: paymentsdb.StatusInFlight,
 	}
 	towerMock.queue.ChanIn() <- &paymentsdb.MPPayment{
-		Info:   &channeldb.PaymentCreationInfo{},
+		Info:   &paymentsdb.PaymentCreationInfo{},
 		Status: paymentsdb.StatusSucceeded,
 	}
 
diff --git a/payments/db/kv_duplicate_payments.go b/payments/db/kv_duplicate_payments.go
index ed539ce..3ac1fad 100644
--- a/payments/db/kv_duplicate_payments.go
+++ b/payments/db/kv_duplicate_payments.go
@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"github.com/btcsuite/btcd/btcec/v2"
-	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/kvdb"
 	"github.com/lightningnetwork/lnd/lntypes"
 	"github.com/lightningnetwork/lnd/lnwire"
@@ -94,11 +93,11 @@ func deserializeDuplicateHTLCAttemptInfo(r io.Reader) (
 }
 
 func deserializeDuplicatePaymentCreationInfo(r io.Reader) (
-	*channeldb.PaymentCreationInfo, error) {
+	*PaymentCreationInfo, error) {
 
 	var scratch [8]byte
 
-	c := &channeldb.PaymentCreationInfo{}
+	c := &PaymentCreationInfo{}
 
 	if _, err := io.ReadFull(r, c.PaymentIdentifier[:]); err != nil {
 		return nil, err
diff --git a/payments/db/kv_store.go b/payments/db/kv_store.go
index 18365f1..02ba649 100644
--- a/payments/db/kv_store.go
+++ b/payments/db/kv_store.go
@@ -186,7 +186,7 @@ func initKVStore(db kvdb.Backend) error {
 // method returns successfully, the payment is guaranteed to be in the InFlight
 // state.
 func (p *KVPaymentsDB) InitPayment(paymentHash lntypes.Hash,
-	info *channeldb.PaymentCreationInfo) error {
+	info *PaymentCreationInfo) error {
 
 	// Obtain a new sequence number for this payment. This is used
 	// to sort the payments in order of creation, and also acts as
@@ -943,7 +943,7 @@ func (p *KVPaymentsDB) FetchPayments() ([]*MPPayment, error) {
 	return payments, nil
 }
 
-func fetchCreationInfo(bucket kvdb.RBucket) (*channeldb.PaymentCreationInfo, error) {
+func fetchCreationInfo(bucket kvdb.RBucket) (*PaymentCreationInfo, error) {
 	b := bucket.Get(paymentCreationInfoKey)
 	if b == nil {
 		return nil, fmt.Errorf("creation info not found")
@@ -1621,7 +1621,7 @@ func fetchSequenceNumbers(paymentBucket kvdb.RBucket) ([][]byte, error) {
 	return sequenceNumbers, nil
 }
 
-func serializePaymentCreationInfo(w io.Writer, c *channeldb.PaymentCreationInfo) error {
+func serializePaymentCreationInfo(w io.Writer, c *PaymentCreationInfo) error {
 	var scratch [8]byte
 
 	if _, err := w.Write(c.PaymentIdentifier[:]); err != nil {
@@ -1658,12 +1658,12 @@ func serializePaymentCreationInfo(w io.Writer, c *channeldb.PaymentCreationInfo)
 	return nil
 }
 
-func deserializePaymentCreationInfo(r io.Reader) (*channeldb.PaymentCreationInfo,
+func deserializePaymentCreationInfo(r io.Reader) (*PaymentCreationInfo,
 	error) {
 
 	var scratch [8]byte
 
-	c := &channeldb.PaymentCreationInfo{}
+	c := &PaymentCreationInfo{}
 
 	if _, err := io.ReadFull(r, c.PaymentIdentifier[:]); err != nil {
 		return nil, err
diff --git a/payments/db/kv_store_test.go b/payments/db/kv_store_test.go
index 3bf4f35..cc64776 100644
--- a/payments/db/kv_store_test.go
+++ b/payments/db/kv_store_test.go
@@ -13,7 +13,6 @@ import (
 
 	"github.com/btcsuite/btcwallet/walletdb"
 	"github.com/davecgh/go-spew/spew"
-	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/kvdb"
 	"github.com/lightningnetwork/lnd/lntypes"
 	"github.com/lightningnetwork/lnd/lnwire"
@@ -32,7 +31,7 @@ func genPreimage() ([32]byte, error) {
 	return preimage, nil
 }
 
-func genInfo(t *testing.T) (*channeldb.PaymentCreationInfo, *HTLCAttemptInfo,
+func genInfo(t *testing.T) (*PaymentCreationInfo, *HTLCAttemptInfo,
 	lntypes.Preimage, error) {
 
 	preimage, err := genPreimage()
@@ -50,7 +49,7 @@ func genInfo(t *testing.T) (*channeldb.PaymentCreationInfo, *HTLCAttemptInfo,
 	)
 	require.NoError(t, err)
 
-	return &channeldb.PaymentCreationInfo{
+	return &PaymentCreationInfo{
 		PaymentIdentifier: rhash,
 		Value:             testRoute.ReceiverAmt(),
 		CreationTime:      time.Unix(time.Now().Unix(), 0),
@@ -1156,7 +1155,7 @@ type htlcStatus struct {
 // assertPaymentInfo retrieves the payment referred to by hash and verifies the
 // expected values.
 func assertPaymentInfo(t *testing.T, p *KVPaymentsDB, hash lntypes.Hash,
-	c *channeldb.PaymentCreationInfo, f *FailureReason,
+	c *PaymentCreationInfo, f *FailureReason,
 	a *htlcStatus) {
 
 	t.Helper()
@@ -1397,7 +1396,7 @@ func assertPayments(t *testing.T, paymentDB *KVPaymentsDB,
 	require.Equal(t, payments, p)
 }
 
-func makeFakeInfo(t *testing.T) (*channeldb.PaymentCreationInfo,
+func makeFakeInfo(t *testing.T) (*PaymentCreationInfo,
 	*HTLCAttemptInfo) {
 
 	var preimg lntypes.Preimage
@@ -1405,7 +1404,7 @@ func makeFakeInfo(t *testing.T) (*channeldb.PaymentCreationInfo,
 
 	hash := preimg.Hash()
 
-	c := &channeldb.PaymentCreationInfo{
+	c := &PaymentCreationInfo{
 		PaymentIdentifier: hash,
 		Value:             1000,
 		// Use single second precision to avoid false positive test
diff --git a/payments/db/payment.go b/payments/db/payment.go
index 334b66e..a5ad753 100644
--- a/payments/db/payment.go
+++ b/payments/db/payment.go
@@ -12,7 +12,6 @@ import (
 	"github.com/btcsuite/btcd/wire"
 	"github.com/davecgh/go-spew/spew"
 	sphinx "github.com/lightningnetwork/lightning-onion"
-	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/lntypes"
 	"github.com/lightningnetwork/lnd/lnutils"
 	"github.com/lightningnetwork/lnd/lnwire"
@@ -76,6 +75,34 @@ func (r FailureReason) String() string {
 	return "unknown"
 }
 
+// PaymentCreationInfo is the information necessary to have ready when
+// initiating a payment, moving it into state InFlight.
+type PaymentCreationInfo struct {
+	// PaymentIdentifier is the hash this payment is paying to in case of
+	// non-AMP payments, and the SetID for AMP payments.
+	PaymentIdentifier lntypes.Hash
+
+	// Value is the amount we are paying.
+	Value lnwire.MilliSatoshi
+
+	// CreationTime is the time when this payment was initiated.
+	CreationTime time.Time
+
+	// PaymentRequest is the full payment request, if any.
+	PaymentRequest []byte
+
+	// FirstHopCustomRecords are the TLV records that are to be sent to the
+	// first hop of this payment. These records will be transmitted via the
+	// wire message only and therefore do not affect the onion payload size.
+	FirstHopCustomRecords lnwire.CustomRecords
+}
+
+// String returns a human-readable description of the payment creation info.
+func (p *PaymentCreationInfo) String() string {
+	return fmt.Sprintf("payment_id=%v, amount=%v, created_at=%v",
+		p.PaymentIdentifier, p.Value, p.CreationTime)
+}
+
 // HTLCAttemptInfo contains static information about a specific HTLC attempt
 // for a payment. This information is used by the router to handle any errors
 // coming back after an attempt is made, and to query the switch about the
@@ -298,7 +325,7 @@ type MPPayment struct {
 
 	// Info holds all static information about this payment, and is
 	// populated when the payment is initiated.
-	Info *channeldb.PaymentCreationInfo
+	Info *PaymentCreationInfo
 
 	// HTLCs holds the information about individual HTLCs that we send in
 	// order to make the payment.
diff --git a/payments/db/payment_test.go b/payments/db/payment_test.go
index a0878e5..2f6bf40 100644
--- a/payments/db/payment_test.go
+++ b/payments/db/payment_test.go
@@ -12,7 +12,6 @@ import (
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/davecgh/go-spew/spew"
-	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/lntypes"
 	"github.com/lightningnetwork/lnd/lnwire"
 	"github.com/lightningnetwork/lnd/record"
@@ -694,7 +693,7 @@ func TestPaymentSetState(t *testing.T) {
 			t.Parallel()
 
 			// Attach the payment info.
-			info := &channeldb.PaymentCreationInfo{
+			info := &PaymentCreationInfo{
 				Value: lnwire.MilliSatoshi(tc.totalAmt),
 			}
 			tc.payment.Info = info
@@ -824,7 +823,7 @@ func TestNeedWaitAttempts(t *testing.T) {
 		tc := tc
 
 		p := &MPPayment{
-			Info: &channeldb.PaymentCreationInfo{
+			Info: &PaymentCreationInfo{
 				PaymentIdentifier: [32]byte{1, 2, 3},
 			},
 			Status: tc.status,
@@ -1002,7 +1001,7 @@ func TestAllowMoreAttempts(t *testing.T) {
 		tc := tc
 
 		p := &MPPayment{
-			Info: &channeldb.PaymentCreationInfo{
+			Info: &PaymentCreationInfo{
 				PaymentIdentifier: [32]byte{1, 2, 3},
 			},
 			Status: tc.status,
diff --git a/routing/control_tower.go b/routing/control_tower.go
index 70e7d9b..c5af230 100644
--- a/routing/control_tower.go
+++ b/routing/control_tower.go
@@ -3,7 +3,6 @@ package routing
 import (
 	"sync"
 
-	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/lntypes"
 	"github.com/lightningnetwork/lnd/multimutex"
 	paymentsdb "github.com/lightningnetwork/lnd/payments/db"
@@ -50,7 +49,7 @@ type DBMPPayment interface {
 type ControlTower interface {
 	// This method checks that no succeeded payment exist for this payment
 	// hash.
-	InitPayment(lntypes.Hash, *channeldb.PaymentCreationInfo) error
+	InitPayment(lntypes.Hash, *paymentsdb.PaymentCreationInfo) error
 
 	// DeleteFailedAttempts removes all failed HTLCs from the db. It should
 	// be called for a given payment whenever all inflight htlcs are
@@ -185,7 +184,7 @@ func NewControlTower(db *paymentsdb.KVPaymentsDB) ControlTower {
 // method returns successfully, the payment is guaranteed to be in the
 // Initiated state.
 func (p *controlTower) InitPayment(paymentHash lntypes.Hash,
-	info *channeldb.PaymentCreationInfo) error {
+	info *paymentsdb.PaymentCreationInfo) error {
 
 	err := p.db.InitPayment(paymentHash, info)
 	if err != nil {
diff --git a/routing/control_tower_test.go b/routing/control_tower_test.go
index 9250b21..9a49377 100644
--- a/routing/control_tower_test.go
+++ b/routing/control_tower_test.go
@@ -559,7 +559,7 @@ func initDB(t *testing.T) *channeldb.DB {
 	)
 }
 
-func genInfo() (*channeldb.PaymentCreationInfo, *paymentsdb.HTLCAttemptInfo,
+func genInfo() (*paymentsdb.PaymentCreationInfo, *paymentsdb.HTLCAttemptInfo,
 	lntypes.Preimage, error) {
 
 	preimage, err := genPreimage()
@@ -579,7 +579,7 @@ func genInfo() (*channeldb.PaymentCreationInfo, *paymentsdb.HTLCAttemptInfo,
 		return nil, nil, lntypes.Preimage{}, err
 	}
 
-	return &channeldb.PaymentCreationInfo{
+	return &paymentsdb.PaymentCreationInfo{
 			PaymentIdentifier: rhash,
 			Value:             testRoute.ReceiverAmt(),
 			CreationTime:      time.Unix(time.Now().Unix(), 0),
diff --git a/routing/mock_test.go b/routing/mock_test.go
index e993ea8..596b511 100644
--- a/routing/mock_test.go
+++ b/routing/mock_test.go
@@ -7,7 +7,6 @@ import (
 
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcd/btcutil"
-	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/fn/v2"
 	"github.com/lightningnetwork/lnd/graph/db/models"
 	"github.com/lightningnetwork/lnd/htlcswitch"
@@ -248,7 +247,7 @@ func (m *mockPayerOld) CleanStore(pids map[uint64]struct{}) error {
 }
 
 type initArgs struct {
-	c *channeldb.PaymentCreationInfo
+	c *paymentsdb.PaymentCreationInfo
 }
 
 type registerAttemptArgs struct {
@@ -268,7 +267,7 @@ type failPaymentArgs struct {
 }
 
 type testPayment struct {
-	info     channeldb.PaymentCreationInfo
+	info     paymentsdb.PaymentCreationInfo
 	attempts []paymentsdb.HTLCAttempt
 }
 
@@ -298,7 +297,7 @@ func makeMockControlTower() *mockControlTowerOld {
 }
 
 func (m *mockControlTowerOld) InitPayment(phash lntypes.Hash,
-	c *channeldb.PaymentCreationInfo) error {
+	c *paymentsdb.PaymentCreationInfo) error {
 
 	if m.init != nil {
 		m.init <- initArgs{c}
@@ -733,7 +732,7 @@ type mockControlTower struct {
 var _ ControlTower = (*mockControlTower)(nil)
 
 func (m *mockControlTower) InitPayment(phash lntypes.Hash,
-	c *channeldb.PaymentCreationInfo) error {
+	c *paymentsdb.PaymentCreationInfo) error {
 
 	args := m.Called(phash, c)
 	return args.Error(0)
diff --git a/routing/router.go b/routing/router.go
index 45d80f6..1dac108 100644
--- a/routing/router.go
+++ b/routing/router.go
@@ -15,7 +15,6 @@ import (
 	"github.com/btcsuite/btcd/btcutil"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/lightningnetwork/lnd/amp"
-	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/clock"
 	"github.com/lightningnetwork/lnd/fn/v2"
 	"github.com/lightningnetwork/lnd/graph/db/models"
@@ -999,7 +998,7 @@ func (r *ChannelRouter) PreparePayment(payment *LightningPayment) (
 	// already in-flight.
 	//
 	// TODO(roasbeef): store records as part of creation info?
-	info := &channeldb.PaymentCreationInfo{
+	info := &paymentsdb.PaymentCreationInfo{
 		PaymentIdentifier:     payment.Identifier(),
 		Value:                 payment.Amount,
 		CreationTime:          r.cfg.Clock.Now(),
@@ -1122,7 +1121,7 @@ func (r *ChannelRouter) sendToRoute(htlcHash lntypes.Hash, rt *route.Route,
 
 	// Record this payment hash with the ControlTower, ensuring it is not
 	// already in-flight.
-	info := &channeldb.PaymentCreationInfo{
+	info := &paymentsdb.PaymentCreationInfo{
 		PaymentIdentifier:     paymentIdentifier,
 		Value:                 amt,
 		CreationTime:          r.cfg.Clock.Now(),