Release for 1.21.5-1.21.6

Added:
• Items
  - Visual Paintings
  - Visual Potions
• Animated
  - Firefly Bush
• Fixes
  - Firefly Bush Emissive

Updated:
• GUI & HUD
  - More Icons
• Variated
  - Axolotl Buckets
  - Pig

Removed:
• Items
  - Visual Mob Spawn Eggs
• Variated
  - Cow
  - Chicken
• Fixes
  - Updated Cow