Add ruff - an extremely fast Python linter, written in Rust.

[mikemadden42]

I use ruff daily to check my Python code.

The author has a couple great articles that showcase the tool which is written in rust & is indispensable for many development workflows.

• https://notes.crmarsh.com/python-tooling-could-be-much-much-faster
• https://notes.crmarsh.com/ruff-the-first-200-releases

[sts10]

Ah, thought this was on here already. Merged. Thanks!