Pre-commit: disable autofix PR's, ignore E203,W503

[Conengmo]

While developing I struggled with the autofix PR's from Pre-commit. It lead to merge conflicts on every push and much frustration. I think it's better to disable it.

I had an other issue also, where Flake8 and Black were disagreeing on a style aspect. Flake8 should ignore two aspects that Black enforces. We may switch to Ruff in the future, but for now just ignore them.

These changes are needed to merge #193.

• E203: whitespace before :https://www.flake8rules.com/rules/E203.html
• W503: linebreak before operator https://www.flake8rules.com/rules/W503.html

[ocefpaf]

Yeah, we should not use autofix. That was probably a copy-n-pasta from when I added the config file.

[Conengmo]

I reckon they switched the default on their side, because it didn’t use to be an issue.

thanks for the review btw!