Codeblock commands: Format with ruff instead of black

[onerandomusername]

Currently, we have some commands that format provided code with black rather than ruff. It would be cool to implement multiple formatters and checkers in order to format and/or lint python code with ruff/black.

Pydis is working on adding support to putting a ruff binary inside snekbox, so this should use that once upstream has a ruff binary inside snekbox.