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/scripts/benchmark.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+# Example command for updating pallet benchmarking
+pushd ../cumulus
+cargo run --release --bin polkadot-parachain \
+--features runtime-benchmarks \
+-- \
+benchmark pallet \
+--chain=bridge-hub-rococo-dev \
+--pallet=snowbridge_ethereum_beacon_client \
+--extrinsic="*" \
+--execution=wasm --wasm-execution=compiled \
+--steps 50 --repeat 20 \
+--output ./parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/weights/snowbridge_ethereum_beacon_client.rs
+popd

bridges/snowbridge/parachain/scripts/hexliteral.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+# Creates a string constant from STDIN
+echo "const DATA: &'static str = concat!("
+cat - | fold | sed 's/^.*/\t"&",/'
+echo ");"

bridges/snowbridge/parachain/scripts/init.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -e
+
+echo "*** Initializing WASM build environment"
+
+if [ -z $CI_PROJECT_NAME ] ; then
+   rustup update nightly
+   rustup update stable
+fi
+
+rustup target add wasm32-unknown-unknown --toolchain nightly

bridges/snowbridge/parachain/scripts/make-build-config.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+cd ../ethereum
+
+truffle exec scripts/dumpParachainConfig.js | sed '/^Using/d;/^$/d'

bridges/snowbridge/parachain/scripts/verify-pallets-build.sh

@@ -0,0 +1,113 @@
+#!/bin/bash
+
+# A script to remove everything from snowbridge repository/subtree, except:
+#
+# - parachain
+# - readme
+# - license
+
+set -eu
+
+# show CLI help
+function show_help() {
+  set +x
+  echo " "
+  echo Error: $1
+  echo "Usage:"
+  echo "  ./scripts/verify-pallets-build.sh          Exit with code 0 if pallets code is well decoupled from the other code in the repo"
+  echo "Options:"
+  echo "  --no-revert                                Leaves only runtime code on exit"
+  echo "  --ignore-git-state                         Ignores git actual state"
+  exit 1
+}
+
+# parse CLI args
+NO_REVERT=
+IGNORE_GIT_STATE=
+for i in "$@"
+do
+	case $i in
+		--no-revert)
+			NO_REVERT=true
+			shift
+			;;
+		--ignore-git-state)
+			IGNORE_GIT_STATE=true
+			shift
+			;;
+		*)
+			show_help "Unknown option: $i"
+			;;
+	esac
+done
+
+# the script is able to work only on clean git copy, unless we want to ignore this check
+[[ ! -z "${IGNORE_GIT_STATE}" ]] || [[ -z "$(git status --porcelain)" ]] || { echo >&2 "The git copy must be clean"; exit 1; }
+
+# let's avoid any restrictions on where this script can be called for - snowbridge repo may be
+# plugged into any other repo folder. So the script (and other stuff that needs to be removed)
+# may be located either in call dir, or one of it subdirs.
+SNOWBRIDGE_FOLDER="$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )/../.."
+
+# remove everything we think is not required for our needs
+rm -rf $SNOWBRIDGE_FOLDER/.cargo
+rm -rf $SNOWBRIDGE_FOLDER/.github
+rm -rf $SNOWBRIDGE_FOLDER/contracts
+rm -rf $SNOWBRIDGE_FOLDER/codecov.yml
+rm -rf $SNOWBRIDGE_FOLDER/docs
+rm -rf $SNOWBRIDGE_FOLDER/hooks
+rm -rf $SNOWBRIDGE_FOLDER/relayer
+rm -rf $SNOWBRIDGE_FOLDER/smoketest
+rm -rf $SNOWBRIDGE_FOLDER/web
+rm -rf $SNOWBRIDGE_FOLDER/.envrc-example
+rm -rf $SNOWBRIDGE_FOLDER/.gitbook.yaml
+rm -rf $SNOWBRIDGE_FOLDER/.gitignore
+rm -rf $SNOWBRIDGE_FOLDER/.gitmodules
+rm -rf $SNOWBRIDGE_FOLDER/_typos.toml
+rm -rf $SNOWBRIDGE_FOLDER/_codecov.yml
+rm -rf $SNOWBRIDGE_FOLDER/flake.lock
+rm -rf $SNOWBRIDGE_FOLDER/flake.nix
+rm -rf $SNOWBRIDGE_FOLDER/go.work
+rm -rf $SNOWBRIDGE_FOLDER/go.work.sum
+rm -rf $SNOWBRIDGE_FOLDER/polkadot-sdk
+rm -rf $SNOWBRIDGE_FOLDER/rust-toolchain.toml
+rm -rf $SNOWBRIDGE_FOLDER/parachain/rustfmt.toml
+rm -rf $SNOWBRIDGE_FOLDER/parachain/.gitignore
+rm -rf $SNOWBRIDGE_FOLDER/parachain/templates
+rm -rf $SNOWBRIDGE_FOLDER/parachain/.config
+rm -rf $SNOWBRIDGE_FOLDER/parachain/pallets/ethereum-beacon-client/fuzz
+
+cd bridges/snowbridge/parachain
+
+# fix polkadot-sdk paths in Cargo.toml files
+find "." -name 'Cargo.toml' | while read -r file; do
+    replace=$(printf '../../' )
+    if [[ "$(uname)" = "Darwin" ]] || [[ "$(uname)" = *BSD ]]; then
+        sed -i '' "s|polkadot-sdk/|$replace|g" "$file"
+    else
+        sed -i "s|polkadot-sdk/|$replace|g" "$file"
+    fi
+done
+
+# let's test if everything we need compiles
+cargo check -p snowbridge-ethereum-beacon-client
+cargo check -p snowbridge-ethereum-beacon-client --features runtime-benchmarks
+cargo check -p snowbridge-ethereum-beacon-client --features try-runtime
+cargo check -p snowbridge-inbound-queue
+cargo check -p snowbridge-inbound-queue --features runtime-benchmarks
+cargo check -p snowbridge-inbound-queue --features try-runtime
+cargo check -p snowbridge-outbound-queue
+cargo check -p snowbridge-outbound-queue --features runtime-benchmarks
+cargo check -p snowbridge-outbound-queue --features try-runtime
+cargo check -p snowbridge-system
+cargo check -p snowbridge-system --features runtime-benchmarks
+cargo check -p snowbridge-system --features try-runtime
+
+cd -
+
+# we're removing lock file after all checks are done. Otherwise we may use different
+# Substrate/Polkadot/Cumulus commits and our checks will fail
+rm -f $SNOWBRIDGE_FOLDER/parachain/Cargo.toml
+rm -f $SNOWBRIDGE_FOLDER/parachain/Cargo.lock
+
+echo "OK"