AxShulkers

Added a new config option: auto-clear-shulkers

• This is an experimental feature, so there might be some issues with it, so for now it is disabled by default.
• What it does? It removes the shulker uuid that we use for the anti dupe from the item when closing the shulker, this makes the plugin a lot more user friendly while keeping the shulker viewer dupe proof.
• I have tested it quite thoroughly, but some issues may still exists, please report them on our discord/github!