Better Skyblock Drops

• Fixed Halloween Event not being set to false by default
• Added a rule for Christmas Event in config
• Added Santa's Hat and Santa's Helper's Hat as a possible helmet for mobs (can drop from them too)
• Added Sweet Candies and Gingerbread Cookies as a possible item in hand for mobs (can drop from them too)
• Added Presents as a possible drop from mobs
  • Presents may drop 1-2 common items (basically trash items)
  • Presents may drop 1 rare item (these are the goodies)
  • Presents are not stackable
  • Presents make a sound when you open them based on rarity of the item you get

This version works on 1.21 - 1.21.4