feat(readme): add coverage badge #5

	name: Workflow for Codecov
	on: [push, pull_request]
	jobs:
	run:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Set up Python 3.11
	uses: actions/setup-python@v4
	with:
	python-version: '3.11'
	- name: Install dependencies
	run: pip install -r requirements-dev.lock
	- name: Run tests and collect coverage
	run: pytest --cov ${{ env.CODECOV_ATS_TESTS }}
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v4
	with:
	verbose: true
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

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