[FEATURE REQUEST] - Modpack Update System

[EdoEquin0x]

What problem does the feature request solve?
Having every players to have to redownload homemade modpacks on every major changes.

Example mock-up (optional)
Basically an additional option in the settings section

Additional information (optional)
I think it could work on the same principles than the "import via code" system. There could be an update code (provided by the modpack creator) that would compare every mods and configs and update/delete them accordingly