Introduce bridge relayers pallet (#1513)

* introduce relayers pallet

* add MessageDeliveryAndDispatchPaymentAdapter

* plug in pallet into test runtimes

* tests prototype

* tests for the relayers pallet

* tests for payment adapter

* mint_reward_payment_procedure_actually_mints_tokens

* benchmarks

* remove irrelevant todo

* remove redundant clone

bridges/modules/relayers/src/weights.rs

@@ -0,0 +1,73 @@
+// Copyright 2019-2021 Parity Technologies (UK) Ltd.
+// This file is part of Parity Bridges Common.
+
+// Parity Bridges Common is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity Bridges Common is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Autogenerated weights for `pallet_bridge_relayers`
+//!
+//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
+//! DATE: 2022-07-20, STEPS: 50, REPEAT: 20
+//! LOW RANGE: [], HIGH RANGE: []
+//! EXECUTION: Some(Wasm), WASM-EXECUTION: Compiled
+//! CHAIN: Some("dev"), DB CACHE: 1024
+
+// Executed Command:
+// target/release/millau-bridge-node
+// benchmark
+// pallet
+// --chain=dev
+// --steps=50
+// --repeat=20
+// --pallet=pallet_bridge_relayers
+// --extrinsic=*
+// --execution=wasm
+// --wasm-execution=Compiled
+// --heap-pages=4096
+// --output=./modules/relayers/src/weights.rs
+// --template=./.maintain/millau-weight-template.hbs
+
+#![allow(clippy::all)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+#![allow(missing_docs)]
+
+use frame_support::{
+	traits::Get,
+	weights::{constants::RocksDbWeight, Weight},
+};
+use sp_std::marker::PhantomData;
+
+/// Weight functions needed for `pallet_bridge_relayers`.
+pub trait WeightInfo {
+	fn claim_rewards() -> Weight;
+}
+
+/// Weights for `pallet_bridge_relayers` using the Millau node and recommended hardware.
+pub struct MillauWeight<T>(PhantomData<T>);
+impl<T: frame_system::Config> WeightInfo for MillauWeight<T> {
+	fn claim_rewards() -> Weight {
+		(38_435_000 as Weight)
+			.saturating_add(T::DbWeight::get().reads(2 as Weight))
+			.saturating_add(T::DbWeight::get().writes(2 as Weight))
+	}
+}
+
+// For backwards compatibility and tests
+impl WeightInfo for () {
+	fn claim_rewards() -> Weight {
+		(38_435_000 as Weight)
+			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
+			.saturating_add(RocksDbWeight::get().writes(2 as Weight))
+	}
+}