Move transactions protocol to its own crate (#12264)

* Move transaction protocol to its own crate

* Update Cargo.lock

* Fix binaries

* Update client/network/transactions/src/lib.rs

Co-authored-by: Dmitry Markin <dmitry@markin.tech>

* Update client/service/src/builder.rs

Co-authored-by: Bastian Köcher <info@kchr.de>

* Apply review comments

* Revert one change and apply cargo-fmt

* Remove Transaction from Message

* Add array-bytes

* trigger CI

* Add comment about codec index

Co-authored-by: Dmitry Markin <dmitry@markin.tech>
Co-authored-by: Bastian Köcher <info@kchr.de>

substrate/bin/node-template/node/src/service.rs

@@ -191,7 +191,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 		Vec::default(),
 	));
 
-	let (network, system_rpc_tx, network_starter) =
+	let (network, system_rpc_tx, tx_handler_controller, network_starter) =
 		sc_service::build_network(sc_service::BuildNetworkParams {
 			config: &config,
 			client: client.clone(),
@@ -238,6 +238,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 		rpc_builder: rpc_extensions_builder,
 		backend,
 		system_rpc_tx,
+		tx_handler_controller,
 		config,
 		telemetry: telemetry.as_mut(),
 	})?;