Add Ruff Linting to the whole app

[duncan_richards12]

It would be nice to view all Ruff linting errors and warnings across the whole app like you can from a normal terminal with ruff check.

[Done] Add Black Code Formatter

No, the current implementation for linting is only per file. The ruff linter is naive and doesn’t know/need to know about the rest of your app. I know VS code has a bottom panel for seeing linting across the whole project. So that’d probably want to be a feature request. Whenever I’ve used vs code’s global linting panel, it’s been a massive performance hog, which we’d want to avoid, especially in larger projects.