Fixes BSU and HSU dupe

[Sefiraat]

Description

Users could pull an extra item from BSUs and HSUs using the COLLECT_TO_CURSOR InventoryAction. I have added a lore line to the display 'progress' item to stop it being stackable for this action.

Changes

Added a new method that adds a single lore line to the ItemStack that is sent to setProcessing which also give the item meaning to the viewing player

Related Issues

Resolves #80

Checklist

• [x] I have fully tested the proposed changes and promise that they will not break everything into chaos.
• [ ] I followed the existing code standards and didn't mess up the formatting.
• [ ] I did my best to add documentation to any public classes or methods I added.
• [x] I have added Nonnull and Nullable annotations to my methods to indicate their behaviour for null values