Mutant Skeleton Armor Tweaks

Added a new implementation to handle infusions on the Mutant Skeleton Skull (waiting on Eldritch End's update)

• No longer copies over the entire NBT stack to the infused item
• Instead, adds a tag that describes the infusion type and material
  • Then, Eldritch End handles the tag and gives it the correct infusion stats

THIS ONLY WORKS ON NEW ITEMS!!!