Replace darglint with ruff or pydoclint

[leandro-lucarella-frequenz]

darglint is currently abandoned (the repo is archived).

There is the intention to implement darglint rules in ruff, so when that happens we should replace darglint with ruff.

There is also a python-based alternative that runs much faster, but it doesn't support Google-style comments yet (but it is also planned jsh9/pydoclint#3): https://github.com/jsh9/pydoclint

[leandro-lucarella-frequenz]

Unblocking because pydoclint now supports google-style comments!