Add .env file generator for GH Actions test coverage

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https://api.github.com/Jelloeater/hubitatcontrol/blob/2aa14404c28c33e36a0c50965765e58b25e3a243/tests/test_cli.py#L17

# CLI Tests
# TODO Add .env file generator for GH Actions test coverage
@pytest.mark.skipif(load_dotenv('.env') is False, reason='No env file found')
def test_cli_keyring():
    cli.load_env_to_keyring()