Complex Proficiencies

Adds proficiencies that allow for players to level up and increase their ability to do a task.

A list of proficiencies currently added include:

-Weaponsmithing
-Armorsmithing
-Cooking
-Fishing
-Leatherworking
-Mining
-Handicrafts
-Metalworking

Features include:

-Level gating
-Bonus stats/drops
-Custom crafting
-NBT support