Improved search

[LoganJFisher]

Idea Overview
Right now, the search function works great for finding a show or movie you've watched or plan to watch to then mark as such. I'd like to see this expanded upon though to make it possible to use Watcharr to find shows and movies that suit your interests that you aren't yet aware of. This could be done by introducing various filters to the search function.

Is your feature request related to a problem? Please describe.
Watcharr has the potential to be a one-stop shop for all show and film information. Finding content you're not already aware of is by far its current weakest area. "Discover" provides some of this functionality (and I appreciate it), but it's only the start of what could be done.

Describe the solution you'd like
Introduce search filters such as MPA content rating (PG, PG-13, etc.), reasons for content ratings (e.g. gore, sexual content, etc.), genres (e.g. comedy, horror, etc.), languages it was produced in and has been dubbed in, and year of production (multi-select).
Also include all of the normal sort functions as well as a review rating sort based on the popular rating shown rather than the user's individual rating.

Describe alternatives you've considered
To my knowledge, no self-hosted services exist that provide this sort of functionality.