Sword that deals more damage based on lost durability

Dependencies:
- Math Expansion
- Player Expansion
- Placeholder API

uses DAMAGE_BOOST for the damage adjustment

player damage refers to the lost durability. divide it by the max durability which is 250 then you get the value between 0 to 1. multiply that with the amount you want the multiplier to be. for this item config, i used 100 meaning, the less durability the item has, the closer the math formula is to approaching the number of 100