WIT: Add `@since`, `@unstable`, and `@deprecated` attr support #50

	name: Format
	on:
	pull_request:

	jobs:
	format:
	runs-on: ubuntu-latest
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true
	container:
	image: swift:6.0.1-jammy
	steps:
	- uses: actions/checkout@v4
	- run: ./Utilities/format.py
	- name: Check for formatting changes
	run: \|
	git config --global --add safe.directory "$GITHUB_WORKSPACE"
	git diff --exit-code \|\| {
	echo "::error::The formatting changed some files. Please run \`./Utilities/format.py\` and commit the changes."
	exit 1
	}

Provide feedback