What is it? :
Its a simple plugin with 1 command.
It turns any item into a Soulbound item, which means that
you cannot drop that item if it has the [Soulbound] tag.
How does it work? :
So, you do /soulbound when holding an item, any item and it will turn
the item "soulbound" which means you cannot drop it.
There is only 1 permission.
/soulbound : soulbounditems.use.apply