Move `ruff` config to `ruff.toml` away from `pyproject.toml`

[yury-fedotov]

Context

I noticed that pyproject.toml of Kedro has ~30 lines of ruff configuration.

It might be beneficial to move them to a dedicated file, ruff.toml, to:

1. Simplify version control and PR reviews (changes to linter config would not be touching the manifest file).
2. Make all ruff settings be together and thus editing them would be easier.
3. Make the pyproject.toml file smaller, as in OSS project it anyway carries a lot of responsibility and complexity because of metadata and packaging specifications.

Ruff docs for reference here.

Important

I mean the change in Kedro itself, for the benefit of maintainers. Not in starters. So users of Kedro would actually not be affected at all. Whether it's valuable in starters can be a separate discussion/issue.

Possible implementation

A PR as a simple as take ruff config sections out of pyproject.toml and add exactly them to ruff.toml.

I can help with that if that's a change the maintainers team wants. Let me know :)

[galenseilisnh]

I would like this proposed change.

[Huongg]

Hey @yury-fedotov,

Thank you for raising this issue and for your contribution! After reviewing the proposed change in PR 4600, we've decided not to proceed with it at this time, as we don't see a clear benefit in switching from pyproject.toml to ruff.toml as the default.

I've shared more details in my comment on the PR, we truly appreciate your effort and would love to see you contribute to other areas of the project. If you're interested, we have several good first issues that might be a great fit!

Closing this issue now, but looking forward to your future contributions.

Thanks again!
Kedro team