~ fixed the missing use of the RHSignItem.sign permission
~ switched from set to add for the signature
This will contain the previous lore an item contains.

Important!
Keep in mind, that /sign delete still removes the entire lore on the item! So be careful with it!

As always, if you find bugs or have an idea for improvement, please do not hesitate to open a discussion here or send me a direct message.

And if you like this or my other plugins, then please leave a review!