feat: add ruff --statistics

[spaceone]

Issue #1814

[spaceone]

@charliermarsh some off topic questions:

• ruff is released once a day (if there were changes)? this is done automatically?
• who are the maintainers - only you or is there a team already?

[not-my-profile]

We don't have an auto-release setup. Ruff releases only happen when Charlie decides to make a release, see also https://github.com/charliermarsh/ruff/pull/2288#issuecomment-1407277090. Afaik Charlie is the only maintainer but he has been working on ruff full-time.

[charliermarsh]

@spaceone - That's right -- I cut a release about once a day, but it's done manually by me. (Mostly just consists of bumping the version via commit, creating a release in GitHub, and ensuring that the GitHub Action does its job.)

I'm working on Ruff full-time. But we have a lot of contributors who are doing heavy lifting :)

[charliermarsh]

This looks good, and I'll merge it as-is. But am I crazy to think that with --statistics, we should just show the statistics, and not the individual error codes? I know Flake8 shows both, but I was surprised by it, and it makes it much harder to pipe into other Unix tools (e.g., to sort the table).

[charliermarsh]

(That would also resolve your question about the two JSON items.)

[spaceone]

OK: I adjusted the branch to shows statistics only and not the individual errors.

[JonathanPlasse]

Will you update the Readme to mention the use of this option?

[charliermarsh]

@JonathanPlasse - Yeah we should probably change the --help in the README to use run check --help instead. Would that resolve it?

[JonathanPlasse]

I think so yes.