Add GenesisConfig for Millau and Rialto Runtimes (#401)

* Add Rialto as a target for the Millau node

* Rename Rialto module to Rialto-PoA

This will reduce confusion as the Millau runtime has a
Rialto module as well which refers to the Substrate chain.

* Add Millau as a target for the Rialto node

* Be more explicit about Rialto PoA related code

* Missed some name changes in the Ethereum PoA relay

* Re-export Substrate pallet structs used by node

* Remove `first_scheduled_change` of Millau in Rialto node

* Make Millau's genesis config for Rialto bridge more accurate

* Set initial header for Millau config

* Update initial Millau authorities

Co-authored-by: Svyatoslav Nikolsky <svyatonik@gmail.com>

* RustFmt Millau authorities

Co-authored-by: Svyatoslav Nikolsky <svyatonik@gmail.com>

bridges/bin/millau/runtime/src/lib.rs

@@ -28,6 +28,8 @@
 #[cfg(feature = "std")]
 include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
 
+pub mod rialto;
+
 use pallet_grandpa::{fg_primitives, AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList};
 use sp_api::impl_runtime_apis;
 use sp_consensus_aura::sr25519::AuthorityId as AuraId;
@@ -321,7 +323,7 @@ construct_runtime!(
 		NodeBlock = opaque::Block,
 		UncheckedExtrinsic = UncheckedExtrinsic
 	{
-		BridgeRialto: pallet_substrate_bridge::{Module, Call, Storage},
+		BridgeRialto: pallet_substrate_bridge::{Module, Call, Storage, Config<T>},
 		BridgeCallDispatch: pallet_bridge_call_dispatch::{Module, Event<T>},
 		System: frame_system::{Module, Call, Config, Storage, Event<T>},
 		RandomnessCollectiveFlip: pallet_randomness_collective_flip::{Module, Call, Storage},