ci: Add Ruff linter as GitHub Action.

[pvital]

Executes Ruff as linter tool to check code pattern.

Signed-off-by: Paulo Vital paulo.vital@ibm.com

[CagriYonca]

@pvital We already use pre-commit package, and it checks our code before letting us push the commits. Do we really need this in Github Action again?

[pvital]

@pvital We already use pre-commit package, and it checks our code before letting us push the commits. Do we really need this in Github Action again?

@CagriYonca, the pre-commit works only if the developer installs the hooks locally. If they don't, the rules can be bypassed.

But I agree this PR is unnecessary. I am closing it.