Rework Mod Toggling System

Toggling mods is a bit of a mess of disconnected features that needs to be redone in a more cohesive way with a clear focus.

Features that should be included:
- An easy, GUI way to enable/disable individual mods (currently implemented as the Enable/Disable Mods Menu)
- A Search or Filter function, possibly also including dependencies & dependents of returned mods (below the actual search results)
- Toggling should respect dependencies, where enabling a mod enables all required dependencies. (could this be done recursively, and without restarting if possible?)
- Disabling could optionally also respect dependencies, and have a way to disable all dependencies *only* used by a particular mod
- There should be a way to "protect" some mods from being disabled by non-specific disabling functions (e.g. Disable All)
- Whitelists could be implemented through the addition of mod "presets" that will enable a set of mods when toggled

The format these are saved in should still be easy to edit by hand, as well as being usable by Olympus in the future.