Add Wococo<>Rococo Header Relayer (#925)

* Add Wococo primitives crate

* Add more Wococo boilerplate code

* Add CLI support for initializing the Wococo<>Rococo bridge

* Add support for relaying headers between Rococo and Wococo

* Fix test

* RustFmt

* Fix compilation issues related to enum naming

* Bump Rococo `spec_version`

* Remove stray Westend references

bridges/primitives/chain-rococo/src/lib.rs

@@ -37,7 +37,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: sp_version::create_runtime_str!("rococo"),
 	impl_name: sp_version::create_runtime_str!("parity-rococo-v1.5"),
 	authoring_version: 0,
-	spec_version: 231,
+	spec_version: 232,
 	impl_version: 0,
 	apis: sp_version::create_apis_vec![[]],
 	transaction_version: 0,
@@ -55,14 +55,14 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 /// See: https://github.com/paritytech/polkadot/blob/master/runtime/rococo/src/lib.rs
 #[derive(parity_scale_codec::Encode, parity_scale_codec::Decode, Debug, PartialEq, Eq, Clone)]
 pub enum Call {
-	/// Generic bridge pallet.
-	#[codec(index = 40)]
-	BridgeCall(BridgeGrandpaCall),
+	/// Wococo bridge pallet.
+	#[codec(index = 41)]
+	BridgeGrandpaWococo(BridgeGrandpaWococoCall),
 }
 
 #[derive(parity_scale_codec::Encode, parity_scale_codec::Decode, Debug, PartialEq, Eq, Clone)]
 #[allow(non_camel_case_types)]
-pub enum BridgeGrandpaCall {
+pub enum BridgeGrandpaWococoCall {
 	#[codec(index = 0)]
 	submit_finality_proof(
 		<PolkadotLike as Chain>::Header,