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/Cargo.lock

@@ -468,6 +468,7 @@ dependencies = [
  "sc-finality-grandpa",
  "sc-keystore",
  "sc-network",
+ "sc-network-common",
  "sc-network-gossip",
  "sc-network-test",
  "sc-utils",
@@ -7934,6 +7935,7 @@ dependencies = [
  "sc-client-db",
  "sc-keystore",
  "sc-network",
+ "sc-network-common",
  "sc-service",
  "sc-telemetry",
  "sc-tracing",
@@ -8547,7 +8549,9 @@ dependencies = [
  "bitflags",
  "bytes",
  "futures",
+ "futures-timer",
  "libp2p",
+ "linked_hash_set",
  "parity-scale-codec",
  "prost-build 0.10.4",
  "sc-consensus",
@@ -8558,6 +8562,7 @@ dependencies = [
  "sp-consensus",
  "sp-finality-grandpa",
  "sp-runtime",
+ "substrate-prometheus-endpoint",
  "thiserror",
 ]
 
@@ -8663,6 +8668,24 @@ dependencies = [
  "substrate-test-runtime-client",
 ]
 
+[[package]]
+name = "sc-network-transactions"
+version = "0.10.0-dev"
+dependencies = [
+ "array-bytes",
+ "futures",
+ "hex",
+ "libp2p",
+ "log",
+ "parity-scale-codec",
+ "pin-project",
+ "sc-network-common",
+ "sc-peerset",
+ "sp-consensus",
+ "sp-runtime",
+ "substrate-prometheus-endpoint",
+]
+
 [[package]]
 name = "sc-offchain"
 version = "4.0.0-dev"
@@ -8851,6 +8874,7 @@ dependencies = [
  "sc-network-common",
  "sc-network-light",
  "sc-network-sync",
+ "sc-network-transactions",
  "sc-offchain",
  "sc-rpc",
  "sc-rpc-server",