Arox's Favorite Mod

This update is dedicated to Arox's birthday.

Re-added the horse head, along with the horse head sandwich.

Added the ketamine bottle, the ✨ bottle, and the Arox boss.

Changed the Volcanic Ruins biome's underground material from deepslate to ashen soil.

Removed the nuke, uranium, and uranium ore (both stone and deepslate versions), and so Alex's Caves is now a dependency to fix any remaining recipes that require uranium.