Add CI workflow for running unittests. #184

	name: Lint and check
	on: [ pull_request ]
	jobs:
	ruff:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	# Run ruff linter:
	- uses: chartboost/ruff-action@v1
	# Run ruff linter for formatting:
	- uses: chartboost/ruff-action@v1
	with:
	args: 'format --check'

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