Feature Request: Add Rule for EOF return

[cynicaljoy]

This is a nitpicky thing and mostly inspired by not wanting to see the 🚫 within PRs on GitHub. It would be great to have a check to make sure that there is a single (multiple returns would fail the check) return at the end of files.

It should have a rule associated with it so that people who aren't annoyed by the icon can skip the check 😂