Add a possibility to transfer the modpack to a new version

[MagnarIUK]

When every new version of Minecraft is out it is kind of pain to sit and manually add all mods to a new modpack (with new version one).
SO it'd be cool, if there was option in settings "Transfer to new version" which is going to create new modpack (asks for name, version and picture (with option to use the same) ) and installs there all available mods from old pack.

For example, I have modpack "Fabric 1.20.5" with mods:
Sodium
ReplayMod
Iris
Item Highlighter

(it is a small number of mods, but usually there are much more)

And then I wanna upgrade to fabric 1.21, so I click "Transfer" and fill in needed version and name, leaving an old modpack picture. It creates new instance on fabric 1.21, checks every mod in "Fabric 1.20.5" for a 1.21 version and if there is, installing it to a new instance, skipping it otherwise.

For my example it'd install only:
Sodium
ReplayMod
Iris
and skip Item Highlighter, since there is no 1.21 version

Also It'd be cool, if they (old and new modpack) were linked, so when a 1.21 version of previously unsupported mods is out it would automatically install on "Update all" hit.