add: support for ruff as a Python linter and fixer (#4347)

this commit adds ruff as both a Python linter and fixer, together with
some tests and documentation.

ruff repo: https://github.com/charliermarsh/ruff

doc/ale-supported-languages-and-tools.txt

@@ -483,6 +483,7 @@ Notes:
   * `pyre`
   * `pyright`
   * `reorder-python-imports`
+  * ruff
   * `unimport`
   * `vulture`!!
   * `yapf`