Apply consistent formatting for python files

[devinrsmith]

Just like we have automatic code formatting for .java files, it would be great to have the same for .python files.

Spotless has support for python files https://github.com/diffplug/spotless/tree/main/plugin-gradle#python.

The only current python format spotless currently implements is based around https://github.com/psf/black. That said, black seems like a great candidate as it seems like a very popular choice.

If it's not already, we probably would want to consider the exact same formatting applied to the docs repo.

[devinrsmith]

#5352 would be nice-to-have before this feature.

[devinrsmith]

https://github.com/astral-sh/ruff has also been mentioned as black-compatible formatter / linter.