[Suggestion] Add a way to manage keys

[Adde2000]

First of all, I just wanna say that me and my friends just started using your admin panel, and we really like it.

I do have a suggestion tho (related to issue 117), could you add the functionality of managing keys in the panel. Maby add something that checks what keys are in the "keys" folder and then run that against the selected mods in the panel.

I have no idea if that's even possible or how to do it, but that would be the function that completes this admin panel, in my opinion.

Anyway, keep up the great work :D