add polygon hook and ism #533

	name: Check Storage Layout Changes

	on:
	pull_request:
	branches: [main]
	paths:
	- 'solidity/**'
	workflow_dispatch:

	jobs:
	diff-check:
	runs-on: ubuntu-latest

	steps:
	# Checkout the PR branch
	- name: Checkout PR branch
	uses: actions/checkout@v3
	with:
	ref: ${{ github.event.pull_request.head.sha \|\| github.sha }}
	submodules: recursive

	- uses: actions/setup-node@v3
	with:
	node-version: 18

	- name: yarn-cache
	uses: actions/cache@v3
	with:
	path: \|
	**/node_modules
	.yarn
	key: ${{ runner.os }}-yarn-cache-${{ hashFiles('./yarn.lock') }}

	- name: yarn-install
	run: yarn install

	- name: foundry-install
	uses: onbjerg/foundry-toolchain@v1

	# Run the command on PR branch
	- name: Run command on PR branch
	run: yarn workspace @hyperlane-xyz/core storage HEAD-storage

	# Checkout the target branch (base)
	- name: Checkout target branch (base) contracts
	env:
	BASE_REF: ${{ github.event.pull_request.base.sha }}
	run: \|
	git fetch origin $BASE_REF
	git checkout $BASE_REF -- solidity/contracts

	# Run the command on the target branch
	- name: Run command on target branch
	run: yarn workspace @hyperlane-xyz/core storage base-storage

	# Compare outputs
	- name: Compare outputs
	run: diff --unified solidity/base-storage solidity/HEAD-storage

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