Move `PeerState` and related types to `peer_state.rs` module

diff --git a/lightning-liquidity/src/lsps1/mod.rs b/lightning-liquidity/src/lsps1/mod.rs
index b068b18..bdfc404 100644
--- a/lightning-liquidity/src/lsps1/mod.rs
+++ b/lightning-liquidity/src/lsps1/mod.rs
@@ -13,4 +13,6 @@ pub mod client;
 pub mod event;
 pub mod msgs;
 #[cfg(lsps1_service)]
+mod peer_state;
+#[cfg(lsps1_service)]
 pub mod service;
diff --git a/lightning-liquidity/src/lsps1/peer_state.rs b/lightning-liquidity/src/lsps1/peer_state.rs
new file mode 100644
index 0000000..71eeb66
--- /dev/null
+++ b/lightning-liquidity/src/lsps1/peer_state.rs
@@ -0,0 +1,84 @@
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+//! Contains peer state objects that are used by `LSPS1ServiceHandler`.
+
+use super::msgs::{LSPS1OrderId, LSPS1OrderParams, LSPS1PaymentInfo, LSPS1Request};
+
+use crate::lsps0::ser::{LSPSDateTime, LSPSRequestId};
+use crate::prelude::HashMap;
+
+use lightning::ln::msgs::{ErrorAction, LightningError};
+use lightning::util::logger::Level;
+
+#[derive(Default)]
+pub(super) struct PeerState {
+	pub(super) outbound_channels_by_order_id: HashMap<LSPS1OrderId, OutboundCRChannel>,
+	pub(super) pending_requests: HashMap<LSPSRequestId, LSPS1Request>,
+}
+
+impl PeerState {
+	pub(super) fn insert_outbound_channel(
+		&mut self, order_id: LSPS1OrderId, channel: OutboundCRChannel,
+	) {
+		self.outbound_channels_by_order_id.insert(order_id, channel);
+	}
+}
+
+struct ChannelStateError(String);
+
+impl From<ChannelStateError> for LightningError {
+	fn from(value: ChannelStateError) -> Self {
+		LightningError { err: value.0, action: ErrorAction::IgnoreAndLog(Level::Info) }
+	}
+}
+
+#[derive(PartialEq, Debug)]
+pub(super) enum OutboundRequestState {
+	OrderCreated { order_id: LSPS1OrderId },
+	WaitingPayment { order_id: LSPS1OrderId },
+}
+
+impl OutboundRequestState {
+	fn awaiting_payment(&self) -> Result<Self, ChannelStateError> {
+		match self {
+			OutboundRequestState::OrderCreated { order_id } => {
+				Ok(OutboundRequestState::WaitingPayment { order_id: order_id.clone() })
+			},
+			state => Err(ChannelStateError(format!("TODO. JIT Channel was in state: {:?}", state))),
+		}
+	}
+}
+
+pub(super) struct OutboundLSPS1Config {
+	pub(super) order: LSPS1OrderParams,
+	pub(super) created_at: LSPSDateTime,
+	pub(super) payment: LSPS1PaymentInfo,
+}
+
+pub(super) struct OutboundCRChannel {
+	pub(super) state: OutboundRequestState,
+	pub(super) config: OutboundLSPS1Config,
+}
+
+impl OutboundCRChannel {
+	pub(super) fn new(
+		order: LSPS1OrderParams, created_at: LSPSDateTime, order_id: LSPS1OrderId,
+		payment: LSPS1PaymentInfo,
+	) -> Self {
+		Self {
+			state: OutboundRequestState::OrderCreated { order_id },
+			config: OutboundLSPS1Config { order, created_at, payment },
+		}
+	}
+	pub(super) fn awaiting_payment(&mut self) -> Result<(), LightningError> {
+		self.state = self.state.awaiting_payment()?;
+		Ok(())
+	}
+}
diff --git a/lightning-liquidity/src/lsps1/service.rs b/lightning-liquidity/src/lsps1/service.rs
index 7d138e3..ac97b61 100644
--- a/lightning-liquidity/src/lsps1/service.rs
+++ b/lightning-liquidity/src/lsps1/service.rs
@@ -20,6 +20,7 @@ use super::msgs::{
 	LSPS1OrderState, LSPS1PaymentInfo, LSPS1Request, LSPS1Response,
 	LSPS1_CREATE_ORDER_REQUEST_ORDER_MISMATCH_ERROR_CODE,
 };
+use super::peer_state::{OutboundCRChannel, PeerState};
 use crate::message_queue::MessageQueue;
 
 use crate::events::EventQueue;
@@ -48,70 +49,6 @@ pub struct LSPS1ServiceConfig {
 	pub supported_options: Option<LSPS1Options>,
 }
 
-struct ChannelStateError(String);
-
-impl From<ChannelStateError> for LightningError {
-	fn from(value: ChannelStateError) -> Self {
-		LightningError { err: value.0, action: ErrorAction::IgnoreAndLog(Level::Info) }
-	}
-}
-
-#[derive(PartialEq, Debug)]
-enum OutboundRequestState {
-	OrderCreated { order_id: LSPS1OrderId },
-	WaitingPayment { order_id: LSPS1OrderId },
-}
-
-impl OutboundRequestState {
-	fn awaiting_payment(&self) -> Result<Self, ChannelStateError> {
-		match self {
-			OutboundRequestState::OrderCreated { order_id } => {
-				Ok(OutboundRequestState::WaitingPayment { order_id: order_id.clone() })
-			},
-			state => Err(ChannelStateError(format!("TODO. JIT Channel was in state: {:?}", state))),
-		}
-	}
-}
-
-struct OutboundLSPS1Config {
-	order: LSPS1OrderParams,
-	created_at: LSPSDateTime,
-	payment: LSPS1PaymentInfo,
-}
-
-struct OutboundCRChannel {
-	state: OutboundRequestState,
-	config: OutboundLSPS1Config,
-}
-
-impl OutboundCRChannel {
-	fn new(
-		order: LSPS1OrderParams, created_at: LSPSDateTime, order_id: LSPS1OrderId,
-		payment: LSPS1PaymentInfo,
-	) -> Self {
-		Self {
-			state: OutboundRequestState::OrderCreated { order_id },
-			config: OutboundLSPS1Config { order, created_at, payment },
-		}
-	}
-	fn awaiting_payment(&mut self) -> Result<(), LightningError> {
-		self.state = self.state.awaiting_payment()?;
-		Ok(())
-	}
-}
-
-#[derive(Default)]
-struct PeerState {
-	outbound_channels_by_order_id: HashMap<LSPS1OrderId, OutboundCRChannel>,
-	pending_requests: HashMap<LSPSRequestId, LSPS1Request>,
-}
-
-impl PeerState {
-	fn insert_outbound_channel(&mut self, order_id: LSPS1OrderId, channel: OutboundCRChannel) {
-		self.outbound_channels_by_order_id.insert(order_id, channel);
-	}
-}
-
 /// The main object allowing to send and receive bLIP-51 / LSPS1 messages.
 pub struct LSPS1ServiceHandler<ES: EntropySource, CM: Deref + Clone, K: KVStore + Clone>
 where