Refactor message relay helpers (#1234)

* refactor message relay helpers

* single standalone_metrics function

* fixed tests

* clippy + fmt

* removed commented code

* add calls tracing

* fix spelling

* cargo fmt

* -commented code

* fix build again

* post-merge build fix

* clippy + fmt

bridges/relays/client-wococo/src/runtime.rs

@@ -74,7 +74,7 @@ pub enum Call {
 	BridgeGrandpaRococo(BridgeGrandpaRococoCall),
 	/// Rococo messages pallet.
 	#[codec(index = 43)]
-	BridgeMessagesRococo(BridgeMessagesRococoCall),
+	BridgeRococoMessages(BridgeRococoMessagesCall),
 }
 
 #[derive(Encode, Decode, Debug, PartialEq, Eq, Clone, TypeInfo)]
@@ -105,7 +105,7 @@ pub enum BridgeGrandpaRococoCall {
 
 #[derive(Encode, Decode, Debug, PartialEq, Eq, Clone, TypeInfo)]
 #[allow(non_camel_case_types)]
-pub enum BridgeMessagesRococoCall {
+pub enum BridgeRococoMessagesCall {
 	#[codec(index = 3)]
 	send_message(
 		LaneId,