Feature Request: Favorites

[FrameEnder]

Is your feature request related to a problem? Please describe.
Yes, outliers like me are archiving crazed, but we still want to be able to categorize our collection of favorites, and in a sea of images it can be hard to remember which ones was which

Describe the solution you'd like
I propose a new .json, favorites.son, or an entry within the repoinfo.json, that holds the ID of favorited images, IDs that you can mark through the app, by clicking a heart icon above Notes, and just below the Tags, also adding a panel for favorites that specifically searches for the IDs you have favorited would be great

Describe alternatives you've considered
I have considered making a separated Booru for my favorites, but it wouldn't be practical, and would take away

Additional context
Add any other context or screenshots about the feature request here.

[resucutie]

I'm wondering how I'll do such thing. As of now, the design of LocalBooru is to add a specific field for messages, but I've been getting interested in TagStudio's way to add some metadata, such as favorites, where they literally add a tag that says it is a favorited image

But, if it is to follow the way that LocalBooru works currently, it would be a separated field