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/lib-substrate-relay/src/finality_target.rs

@@ -18,8 +18,10 @@
 //! bridge GRANDPA pallet deployed and provide `<BridgedChainName>FinalityApi` to allow bridging
 //! with <BridgedName> chain.
 
-use crate::finality_pipeline::{
-	FinalitySyncPipelineAdapter, SubmitFinalityProofCallBuilder, SubstrateFinalitySyncPipeline,
+use crate::{
+	finality_pipeline::{
+		FinalitySyncPipelineAdapter, SubmitFinalityProofCallBuilder, SubstrateFinalitySyncPipeline,
+	},
 	TransactionParams,
 };
 
@@ -103,16 +105,13 @@ where
 			P::SubmitFinalityProofCallBuilder::build_submit_finality_proof_call(header, proof);
 		self.client
 			.submit_signed_extrinsic(
-				self.transaction_params.transactions_signer.public().into(),
+				self.transaction_params.signer.public().into(),
 				move |best_block_id, transaction_nonce| {
 					Bytes(
 						P::TransactionSignScheme::sign_transaction(
 							genesis_hash,
-							&transaction_params.transactions_signer,
-							TransactionEra::new(
-								best_block_id,
-								transaction_params.transactions_mortality,
-							),
+							&transaction_params.signer,
+							TransactionEra::new(best_block_id, transaction_params.mortality),
 							UnsignedTransaction::new(call, transaction_nonce),
 						)
 						.encode(),