[Enhancement] Specify usable item slot for specific item-generator item in item editor

[gMithos]

Currently, ProRPGItems looks for specific slots to apply stats from an item generated using the itemgenerator module (armor slots, hand, offhand..). I think it's a great idea to be able to specify what slot a specific item should be in to actually give its stats. ex. A Iron Chestpiece only gives stats when in the chest armor slot, it would stop interaction such as holding the armor in the hand slot and give its stats. Pretty sure it can have a lot of uses and it would be editable in the item editor ingame gui.