extract shared logic for htlc_intercepted, htlc_handling_failed, and channel_ready

Author: johncantrell97

src/lsps2/service.rs

@@ -28,6 +28,7 @@ use lightning::util::logger::Level;
 use bitcoin::secp256k1::PublicKey;
 
 use core::ops::Deref;
+use std::sync::MutexGuard;
 
 use crate::lsps2::msgs::{
 	BuyRequest, BuyResponse, GetInfoRequest, GetInfoResponse, LSPS2Message, LSPS2Request,