Enhancements on Mod Dependencies

### I am planning on implementing this myself

No

### Describe your request

This feature aims to allow users to specify some mods (say mod A) as dependencies of other mods (say mod B), even if mod B's author doesn't say mod A is a dependency.
So in this way, whenever mod B is enabled, mod A is also enabled automatically.

e.g.
- users want to enable [Collab Lobby UI](https://gamebanana.com/mods/429997) whenever [Collab Utils 2](https://gamebanana.com/mods/53704) is enabled

- users want to enable [Speedrun Tool](https://gamebanana.com/tools/6597), [TAS Helper](https://gamebanana.com/tools/12383), [TAS Recorder](https://gamebanana.com/tools/14085) and [GhostMod](https://github.com/DemoJameson/GhostMod) whenever [CelesteTAS](https://gamebanana.com/tools/6715) is enabled

The config should be easy to edit by hand or using a in-game UI

some details:

- when mod A doesn't exist, maybe we should still load mod B anyway, but i'm not sure

- note that mod B doesn't need to be a dependency of mod A (e.g. GhostMod and CelesteTAS)

### Additional context

_No response_