Adds Snowbridge to Rococo runtime (#2522)

# Description

Adds Snowbridge to the Rococo bridge hub runtime. Includes config
changes required in Rococo asset hub.

---------

Co-authored-by: Alistair Singh <alistair.singh7@gmail.com>
Co-authored-by: ron <yrong1997@gmail.com>
Co-authored-by: Vincent Geddes <vincent.geddes@hey.com>
Co-authored-by: claravanstaden <Cats 4 life!>

bridges/snowbridge/parachain/runtime/rococo-common/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "snowbridge-rococo-common"
+description = "Snowbridge Rococo Common"
+version = "0.0.1"
+authors = ["Snowfork <contact@snowfork.com>"]
+edition = "2021"
+license = "Apache-2.0"
+
+[dependencies]
+log = { version = "0.4.20", default-features = false }
+
+frame-support = { path = "../../../../../substrate/frame/support", default-features = false }
+xcm = { package = "staging-xcm", path = "../../../../../polkadot/xcm", default-features = false }
+
+[dev-dependencies]
+
+[features]
+default = ["std"]
+std = [
+	"frame-support/std",
+	"log/std",
+	"xcm/std",
+]
+runtime-benchmarks = [
+	"frame-support/runtime-benchmarks",
+]

bridges/snowbridge/parachain/runtime/rococo-common/src/lib.rs

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+//! # Rococo Common
+//!
+//! Config used for the Rococo asset hub and bridge hub runtimes.
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use frame_support::parameter_types;
+use xcm::opaque::lts::NetworkId;
+
+pub const INBOUND_QUEUE_MESSAGES_PALLET_INDEX: u8 = 80;
+
+parameter_types! {
+	// Network and location for the Ethereum chain.
+	pub EthereumNetwork: NetworkId = NetworkId::Ethereum { chain_id: 11155111 };
+}