Submit Ratings

[otobot1]

Is your feature request related to a problem? Please describe.
Users need to be able to submit new ratings.

Describe the solution you'd like
Implement the ability for people to submit ratings from the Mods page when clicking on the Rate this mod button in the MapsTable. If possible, the new rating should happen in a Modal and not redirect to a new page. Ideally the solution will also work on the individual mod pages once those are implemented.

Describe alternatives you've considered
N/A. This is a required feature.

Additional context
Co-supersedes #532 along with #766.

If we need multi-step modals we can import Mantine's Modal Manager from the @mantine/modals package, but I would prefer to avoid adding another dependency unless we really need it.

We also need a form or similar mechanism to allow submitting many ratings at once. Sort of like the original bulk rating form, but not unreadable and annoying to use. This is not a high priority at this time and can be left as a follow-up issue.