[IMP] Store ruff's cache in ~/.cache/ruff

[PabloEForgeFlow]

#425 replaced most linters with ruff based on OCA/oca-addons-repo-template@49b350f, but didn't ignore /.ruff_cache.

[pedrobaeza]

Shouldn't be such cache on the personal profile instead of each repo?

[PabloEForgeFlow]

I think so as well, but for some reason the default path is the root of the current project.

[pedrobaeza]

I think we should set RUFF_CACHE_DIR in the pre-commit environment somehow. How is this done in OCA?

[PabloEForgeFlow]

We could do that by adding cache-dir = "~/.cache/ruff" to .ruff.toml. I simply decided to follow what they did as per OCA/oca-addons-repo-template@49b350f.

[pedrobaeza]

Thanks for the extra info, but I think it's not a good default, because it also means to spread mini-cache dirs around all your drive, and to not be efficient. Please set such configuration here, and propose it also to OCA.

[pedrobaeza]

Please do the same on OCA's template.