primitives: Add derives to encoders and decoders

diff --git a/primitives/src/block.rs b/primitives/src/block.rs
index 2ce10c17..c08d2f0d 100644
--- a/primitives/src/block.rs
+++ b/primitives/src/block.rs
@@ -336,6 +336,7 @@ impl std::error::Error for ParseBlockError {
 #[cfg(feature = "alloc")]
 encoding::encoder_newtype! {
     /// The encoder for the [`Block`] type.
+    #[derive(Debug, Clone)]
     pub struct BlockEncoder<'e>(
         Encoder2<HeaderEncoder<'e>, Encoder2<CompactSizeEncoder, SliceEncoder<'e, Transaction>>>
     );
@@ -369,6 +370,7 @@ type BlockInnerDecoder = Decoder2<HeaderDecoder, VecDecoder<Transaction>>;
 ///
 /// This decoder can only produce a `Block<Unchecked>`.
 #[cfg(feature = "alloc")]
+#[derive(Debug, Clone)]
 pub struct BlockDecoder(BlockInnerDecoder);
 
 #[cfg(feature = "alloc")]
@@ -638,6 +640,7 @@ impl std::error::Error for ParseHeaderError {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`Header`] type.
+    #[derive(Debug, Clone)]
     pub struct HeaderEncoder<'e>(
         encoding::Encoder6<
             VersionEncoder<'e>,
@@ -675,6 +678,7 @@ type HeaderInnerDecoder = Decoder6<
 >;
 
 /// The decoder for the [`Header`] type.
+#[derive(Debug, Clone)]
 pub struct HeaderDecoder(HeaderInnerDecoder);
 
 impl HeaderDecoder {
@@ -899,6 +903,7 @@ impl Default for Version {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`Version`] type.
+    #[derive(Debug, Clone)]
     pub struct VersionEncoder<'e>(encoding::ArrayEncoder<4>);
 }
 
@@ -912,6 +917,7 @@ impl encoding::Encodable for Version {
 }
 
 /// The decoder for the [`Version`] type.
+#[derive(Debug, Clone)]
 pub struct VersionDecoder(encoding::ArrayDecoder<4>);
 
 impl VersionDecoder {
diff --git a/primitives/src/hash_types/block_hash.rs b/primitives/src/hash_types/block_hash.rs
index 65684396..5cb0a4dc 100644
--- a/primitives/src/hash_types/block_hash.rs
+++ b/primitives/src/hash_types/block_hash.rs
@@ -48,10 +48,12 @@ impl encoding::Decodable for BlockHash {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`BlockHash`] type.
+    #[derive(Debug, Clone)]
     pub struct BlockHashEncoder<'e>(encoding::ArrayRefEncoder<'e, 32>);
 }
 
 /// The decoder for the [`BlockHash`] type.
+#[derive(Debug, Clone)]
 pub struct BlockHashDecoder(encoding::ArrayDecoder<32>);
 
 impl BlockHashDecoder {
diff --git a/primitives/src/hash_types/transaction_merkle_node.rs b/primitives/src/hash_types/transaction_merkle_node.rs
index c8746b58..8a1e3df1 100644
--- a/primitives/src/hash_types/transaction_merkle_node.rs
+++ b/primitives/src/hash_types/transaction_merkle_node.rs
@@ -68,10 +68,12 @@ impl encoding::Decodable for TxMerkleNode {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`TxMerkleNode`] type.
+    #[derive(Debug, Clone)]
     pub struct TxMerkleNodeEncoder<'e>(encoding::ArrayRefEncoder<'e, 32>);
 }
 
 /// The decoder for the [`TxMerkleNode`] type.
+#[derive(Debug, Clone)]
 pub struct TxMerkleNodeDecoder(encoding::ArrayDecoder<32>);
 
 impl TxMerkleNodeDecoder {
diff --git a/primitives/src/hash_types/witness_merkle_node.rs b/primitives/src/hash_types/witness_merkle_node.rs
index 05f8ced6..be1d3d05 100644
--- a/primitives/src/hash_types/witness_merkle_node.rs
+++ b/primitives/src/hash_types/witness_merkle_node.rs
@@ -68,10 +68,12 @@ impl encoding::Decodable for WitnessMerkleNode {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`WitnessMerkleNode`] type.
+    #[derive(Debug, Clone)]
     pub struct WitnessMerkleNodeEncoder<'e>(encoding::ArrayRefEncoder<'e, 32>);
 }
 
 /// The decoder for the [`WitnessMerkleNode`] type.
+#[derive(Debug, Clone)]
 pub struct WitnessMerkleNodeDecoder(encoding::ArrayDecoder<32>);
 
 impl WitnessMerkleNodeDecoder {
diff --git a/primitives/src/script/borrowed.rs b/primitives/src/script/borrowed.rs
index 4e44861b..80ac2841 100644
--- a/primitives/src/script/borrowed.rs
+++ b/primitives/src/script/borrowed.rs
@@ -182,6 +182,7 @@ impl<T> Script<T> {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`Script<T>`] type.
+    #[derive(Debug, Clone)]
     pub struct ScriptEncoder<'e>(Encoder2<CompactSizeEncoder, BytesEncoder<'e>>);
 }
 
diff --git a/primitives/src/script/owned.rs b/primitives/src/script/owned.rs
index b5d043ee..71ed7216 100644
--- a/primitives/src/script/owned.rs
+++ b/primitives/src/script/owned.rs
@@ -184,6 +184,7 @@ impl<T> DerefMut for ScriptBuf<T> {
 }
 
 /// The decoder for the [`ScriptBuf`] type.
+#[derive(Debug, Clone)]
 pub struct ScriptBufDecoder<T>(ByteVecDecoder, PhantomData<T>);
 
 impl<T> ScriptBufDecoder<T> {
diff --git a/primitives/src/transaction.rs b/primitives/src/transaction.rs
index ff8087d6..ddc3524b 100644
--- a/primitives/src/transaction.rs
+++ b/primitives/src/transaction.rs
@@ -337,6 +337,7 @@ type TransactionEncoderInner<'e> = Encoder6<
 #[cfg(feature = "alloc")]
 encoding::encoder_newtype! {
     /// The encoder for the [`Transaction`] type.
+    #[derive(Debug, Clone)]
     pub struct TransactionEncoder<'e>(TransactionEncoderInner<'e>);
 }
 
@@ -430,6 +431,7 @@ impl std::error::Error for ParseTransactionError {
 
 /// The decoder for the [`Transaction`] type.
 #[cfg(feature = "alloc")]
+#[derive(Debug, Clone)]
 pub struct TransactionDecoder {
     state: TransactionDecoderState,
 }
@@ -665,6 +667,7 @@ impl encoding::Decodable for Transaction {
 
 /// The state of the transiting decoder.
 #[cfg(feature = "alloc")]
+#[derive(Debug, Clone)]
 enum TransactionDecoderState {
     /// Decoding the transaction version.
     Version(VersionDecoder),
@@ -858,6 +861,7 @@ impl TxIn {
 #[cfg(feature = "alloc")]
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`TxIn`] type.
+    #[derive(Debug, Clone)]
     pub struct TxInEncoder<'e>(
         Encoder3<OutPointEncoder<'e>, ScriptEncoder<'e>, SequenceEncoder<'e>>
     );
@@ -881,6 +885,7 @@ impl encoding::Encodable for TxIn {
 
 /// Encodes the witnesses from a list of inputs.
 #[cfg(feature = "alloc")]
+#[derive(Debug, Clone)]
 pub struct WitnessesEncoder<'e> {
     inputs: &'e [TxIn],
     /// Encoder for the current witness being encoded.
@@ -936,6 +941,7 @@ type TxInInnerDecoder = Decoder3<OutPointDecoder, ScriptSigBufDecoder, SequenceD
 
 /// The decoder for the [`TxIn`] type.
 #[cfg(feature = "alloc")]
+#[derive(Debug, Clone)]
 pub struct TxInDecoder(TxInInnerDecoder);
 
 #[cfg(feature = "alloc")]
@@ -1033,6 +1039,7 @@ pub struct TxOut {
 #[cfg(feature = "alloc")]
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`TxOut`] type.
+    #[derive(Debug, Clone)]
     pub struct TxOutEncoder<'e>(Encoder2<AmountEncoder<'e>, ScriptEncoder<'e>>);
 }
 
@@ -1053,6 +1060,7 @@ type TxOutInnerDecoder = Decoder2<AmountDecoder, ScriptPubKeyBufDecoder>;
 
 /// The decoder for the [`TxOut`] type.
 #[cfg(feature = "alloc")]
+#[derive(Debug, Clone)]
 pub struct TxOutDecoder(TxOutInnerDecoder);
 
 #[cfg(feature = "alloc")]
@@ -1144,6 +1152,7 @@ impl OutPoint {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`OutPoint`] type.
+    #[derive(Debug, Clone)]
     pub struct OutPointEncoder<'e>(Encoder2<BytesEncoder<'e>, ArrayEncoder<4>>);
 }
 
@@ -1211,6 +1220,7 @@ fn parse_vout(s: &str) -> Result<u32, ParseOutPointError> {
 
 /// The decoder for the [`OutPoint`] type.
 // 32 for the txid + 4 for the vout
+#[derive(Debug, Clone)]
 pub struct OutPointDecoder(encoding::ArrayDecoder<36>);
 
 impl OutPointDecoder {
@@ -1513,6 +1523,7 @@ impl From<Version> for u32 {
 
 encoding::encoder_newtype_exact! {
     /// The encoder for the [`Version`] type.
+    #[derive(Debug, Clone)]
     pub struct VersionEncoder<'e>(encoding::ArrayEncoder<4>);
 }
 
@@ -1526,6 +1537,7 @@ impl encoding::Encodable for Version {
 }
 
 /// The decoder for the [`Version`] type.
+#[derive(Debug, Clone)]
 pub struct VersionDecoder(encoding::ArrayDecoder<4>);
 
 impl VersionDecoder {
diff --git a/primitives/src/witness.rs b/primitives/src/witness.rs
index bcb200a7..9b846cd7 100644
--- a/primitives/src/witness.rs
+++ b/primitives/src/witness.rs
@@ -259,6 +259,7 @@ fn decode_cursor(bytes: &[u8], start_of_indices: usize, index: usize) -> Option<
 }
 
 /// The encoder for the [`Witness`] type.
+#[derive(Debug, Clone)]
 pub struct WitnessEncoder<'e>(Encoder2<CompactSizeEncoder, BytesEncoder<'e>>);
 
 impl encoding::Encodable for Witness {
@@ -286,6 +287,7 @@ impl encoding::Encoder for WitnessEncoder<'_> {
 
 /// The decoder for the [`Witness`] type.
 #[cfg(feature = "alloc")]
+#[derive(Debug, Clone)]
 pub struct WitnessDecoder {
     /// The single buffer that will become the Witness content.
     /// The index entries are written at the beginning, then rotated in [`Self::end`].