Add PyTest IDs for better readability and filtering

[GatlenCulp]

This small PR adds dynamically generated IDs for the config parameters. This makes it immediately clear which configuration failed and allows for filtering with pytest -k EXPRESSION. Ex: To only run the tests using conda and mkdocs you can do pytest -k "conda and mkdocs".

def pytest_generate_tests(metafunc):
    # setup config fixture to get all of the results from config_generator
    def make_test_id(config): # NEW
        return f"{config['environment_manager']}-{config['dependency_file']}-{config['docs']}"
    
    if "config" in metafunc.fixturenames:
        metafunc.parametrize(
            "config",
            config_generator(metafunc.config.getoption("fast")),
            ids=make_test_id # NEW
        )

Before:

After:

(Screenshots from VSCode Test Explorer)

The changes to pyproject.toml and .gitignore are small changes for my local development which you're free to add or ignore.

[chrisjkuch]

Sorry for the delay on this @GatlenCulp - would you mind fixing the linting issue so I can run the tests?