Temp Shelves Fix

This plugin that I made over a few hours or so stops people from putting items in shelves, since apparently they're being used to dupe items.

Important note: OPs by default have the permission nodes to bypass the checks, if you're wondering why it might not be working, try deoping yourself.

Permission nodes, or well a single node:

tempShelvesFix.bypass: Used to bypass for testing purposes.

Demonstrated on my YouTube channel: https://www.youtube.com/watch?v=s4DYoub2pB0