Use custom type for ProtocolName (#12172)

* Add ProtocolName custom type

* Use new ProtocolName in sc_network_common

* Use new ProtocolName in sc_network

* Use new ProtocolName for BEEFY and GRANDPA

* Use new ProtocolName for notifications

* Use new ProtocolName in sc_network (part 2)

* Use new ProtocolName in sc_network_gossip

* Use new ProtocolName in sc_offchain

* Remove unused imports

* Some more fixes

* Add tests

* Fix minor import issues

* Re-export ProtocolName in sc_network

* Revert "Re-export ProtocolName in sc_network"

This reverts commit 8d8ff71927e7750757f29c9bbd88dc0ba181d214.

* Re-export ProtocolName in sc_network

* Remove dependency on sc-network-common from beefy-gadget

substrate/client/network/test/src/lib.rs

@@ -23,7 +23,6 @@ mod block_import;
 mod sync;
 
 use std::{
-	borrow::Cow,
 	collections::HashMap,
 	marker::PhantomData,
 	pin::Pin,
@@ -58,6 +57,7 @@ use sc_network::{
 };
 use sc_network_common::{
 	config::{MultiaddrWithPeerId, ProtocolId},
+	protocol::ProtocolName,
 	service::{NetworkBlock, NetworkStateInfo, NetworkSyncForkRequest},
 	sync::warp::{AuthorityList, EncodedProof, SetId, VerificationResult, WarpSyncProvider},
 };
@@ -682,7 +682,7 @@ pub struct FullPeerConfig {
 	/// Block announce validator.
 	pub block_announce_validator: Option<Box<dyn BlockAnnounceValidator<Block> + Send + Sync>>,
 	/// List of notification protocols that the network must support.
-	pub notifications_protocols: Vec<Cow<'static, str>>,
+	pub notifications_protocols: Vec<ProtocolName>,
 	/// The indices of the peers the peer should be connected to.
 	///
 	/// If `None`, it will be connected to all other peers.