Enhance Rework for Memory Fragments & Durability Loss
- Added memory fragment to give command, usage "/give PLAYER memoryfragment AMOUNT"
- Added memory fragments drop chance upon mining blocks (configurable)
- Added "/erepair" command that uses memory fragments to repair the held enhanced item, consuming them
- Items that fail to enhance now have their durability reduced by 10% every time. Although they cannot break from this, they do get reduced to 1/MAX_DURABILITY