`paracelsus graph` without a `pyproject.toml`.

[lgautier]

If I understand it correctly, a pyproject.toml is an optional way to specify parameters for a paracelsus graph command.

However, trying to run paracelsus graph without a --config and without a pyproject.toml at the default guessed location results in an error. The current alternative seems to be adding an empty pyproject.toml to that default inferred location.

Would it made sense add a --no-pyproject flag to the CLI?