Open Shulker Boxes In Inventory

This datapack makes it so that if you put a shulker box in your offhand, it swaps its contents with your inventory. And no, you can't put a shulker box inside of another shulker box. Well, not unless you delete all of the code in "in.mcfunction". It's your choice. Also, this datapack can sometimes be buggy in creative mode, but that doesn't matter, because why would you care about opening a shulker box in your inventory if you're in creative mode? Anyway, enjoy!