Reorganize repository to use new Volto add-on format based on cookiecutter-volto #1

	name: Changelog check
	on:
	pull_request:
	types: [assigned, opened, synchronize, reopened, labeled, unlabeled]
	branches:
	- main

	env:
	NODE_VERSION: 20.x
	ADDON_NAME: volto-code-block

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	# Fetch all history
	fetch-depth: '0'

	- name: Install pipx
	run: pip install towncrier

	- name: Use Node.js
	uses: actions/setup-node@v4
	with:
	node-version: ${{ env.NODE_VERSION }}

	- uses: pnpm/action-setup@v3
	name: Install pnpm
	with:
	version: 8
	# We don't want to install until later,
	# when the cache and Cypress are in place
	run_install: false

	- name: Get pnpm store directory
	shell: bash
	run: \|
	echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV

	- uses: actions/cache@v4
	name: Setup pnpm cache
	with:
	path: ${{ env.STORE_PATH }}
	key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
	restore-keys: \|
	${{ runner.os }}-pnpm-store-

	- name: Install dependencies
	run: \|
	make install

	- name: Check for presence of a Change Log fragment (only pull requests)
	run: \|
	# Fetch the pull request' base branch so towncrier will be able to
	# compare the current branch with the base branch.
	# Source: https://github.com/actions/checkout/#fetch-all-branches.
	git fetch --no-tags origin ${BASE_BRANCH}
	towncrier check --dir packages/${ADDON_NAME}
	env:
	BASE_BRANCH: ${{ github.base_ref }}
	if: github.event_name == 'pull_request'

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