Use black or ruff formatter

[aparcar]

Hi, while adding a feature I realized my formatting tool messed with some lines I didn't intent. This brings up the question if there is a formatter in place which should be used. If not, I'd like to suggest using either black or ruff. If there is such interested I'll happily create a PR.

[Bastian-Krause]

First steps towards ruff were merged in #1426.