Ability to Edit Inventory

Issue description

Editing Player Inventory is not Editing the texture in a minecraft texture folder but Really edit it

I want the possibility to like, Add Slots to the Inventory, or a new Category like to Equip armor in Galaticraft

I want to add the possibilty to Equip new Equipment like Rings or a 2nd Category which will Add the slots to add items in

Issue comments

There is no official API to do this in Minecraft. Mods that do this risk the incompatibility with other mods that do related things like adding other elements to existing GUIs.

This is way out of the scope of MCreator unfortunately and as I said risky and not really well compatible too.

I think yeah, I think making a new gui is possible for that, Like Book of Skill, Just do it open a gui, and when place item in slot, it does effects, that work as well

Adding new GUIs is, of course, possible, but editing existing GUIs not really. I mean it is possible, but in the way I described above only, unfortunately.