Make codebase compatible with `ruff format`

[jeffcarp]

Via #139

Currently ruff format --check returns a lot of proposed changes. One issue though is that ruff doesn't fully support the Google Python style guide (e.g. no support for 2 spaces for indentation and 4 for continued indentation).

[PraaneshSelvaraj]

@jeffcarp Can you assign this to me? If no one is working on it.