Addition of pre-commits

[Danguilhen]

Hello,

I see you are not using pre-commits.
Pre-commits enable the code to have a better quality and the maintainability is much easier especially when multiple people are involved.

I suggest to duplicate my example from the package ipoly:
https://github.com/Danguilhen/ipoly/blob/0.1.6/.pre-commit-config.yaml

I can do the adjustments on a future PR if you agree on the idea !?

[szabgab]

I am personally not a fan of pre-commit hooks, I usually prefer to add such checks to the CI system.
However, recently I started to play with it. I'll take a look at it so I better understand it before we add it.