* 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
* Extract `NetworkKVProvider` trait in `sc-authority-discovery` and remove unnecessary dependency
* Extract `NetworkSyncForkRequest` trait in `sc-finality-grandpa`
* Relax requirements on `SyncOracle` trait, remove extra native methods from `NetworkService` that are already provided by trait impls
* Move `NetworkSigner` trait from `sc-authority-discovery` into `sc-network-common` and de-duplicate methods on `NetworkService`
* Move `NetworkKVProvider` trait from `sc-authority-discovery` into `sc-network-common` and de-duplicate methods on `NetworkService`
* Minimize `sc-authority-discovery` dependency on `sc-network`
* Move `NetworkSyncForkRequest` trait from `sc-finality-grandpa` to `sc-network-common` and de-duplicate methods in `NetworkService`
* Extract `NetworkStatusProvider` trait and de-duplicate methods on `NetworkService`
* Extract `NetworkPeers` trait and de-duplicate methods on `NetworkService`
* Extract `NetworkEventStream` trait and de-duplicate methods on `NetworkService`
* Move more methods from `NetworkService` into `NetworkPeers` trait
* Move `NetworkStateInfo` trait into `sc-network-common`
* Extract `NetworkNotification` trait and de-duplicate methods on `NetworkService`
* Extract `NetworkRequest` trait and de-duplicate methods on `NetworkService`
* Remove `NetworkService::local_peer_id()`, it is already provided by `NetworkStateInfo` impl
* Extract `NetworkTransaction` trait and de-duplicate methods on `NetworkService`
* Extract `NetworkBlock` trait and de-duplicate methods on `NetworkService`
* Remove dependencies on `NetworkService` from most of the methods of `sc-service`
* Address simple review comments
Dmitry Markin