add more "formatting" ?

[Remi-Gau]

Things I can easily implement:

• black
• isort
• pyupgrade
• codespell
• pre-commit

probably to match the config we use on the nilearn side: https://github.com/nilearn/nilearn/blob/main/.pre-commit-config.yaml

[Remi-Gau]

let me know what you think

[miykael]

I'm not familiar with pyupgrade but know the others. So yes, feel free to add any/all of them or make it comparable to nilearn. Thank you!