New rule proposal: no URL-encoded links

[queengooborg]

This rule came to mind when running into a Prettier bug with links that have HTTP encoding in them. It would be awesome to see a rule that prevents HTTP encoding within links -- since browsers automatically re-encode links as needed, it would also help with readability when looking at the raw Markdown.

For example, /fr/docs/Web/JavaScript/Tableaux_typ%C3%A9s would be disallowed and must be converted to /fr/docs/Web/JavaScript/Tableaux_typés.

(I can also see the possibility of a configuration option that inverts this rule, so that links must be HTTP encoded, but in a world where Unicode exists, I doubt this option would have much benefit.)

Edit: I realize that %20 is actually a good case of where HTTP encoding should be used. Maybe a configurable allow list should be a thing?