Feat: ruff

[MarceloRobert]

Description

Ruff is a fast python linter and formatter which is going to be adopted by the KernelCI repositories (following the contributing guidelines discussion).

For now, the selected rules were just the basic ones selected by default for ruff as in this example.
A list of all rules can be found here.

Note

I didn't enable the function complexity rule because there are many functions over the complexity limit of 10, which means there would be too much refactor to be done. Some functions exceeded 60 in complexity.

Changes

• Adds ruff as a formatter and linter
• Adds pre-commit-config to run ruff on pre-commit
• Adds Github CI to run ruff on pull requests

This PR also adds a .git-blame-ignore-revs so that we can ignore the reformatting commit when using the git blame command.

All commits are related, but if a PR split is required we can review that too.

How to test

Check the instructions in the documentation, install the dev dependencies, run ruff format and ruff check --fix and see that everything is already formatted. Try adding some formatting error such as "blank line after class definition" or a linting error such as "unused import" and check that ruff will catch those problems.

Closes #3

[tales-aparecida]

LGTM I personally prefer double quotes to allow contraction, but I understand this was done to

continue with repository style

[tales-aparecida]

Pls add sign-off to your commits