Frostiful

This updates Frostiful to 1.21.3. This will only be temporarily supported as I will be moving to 1.21.4 almost right away. This version is being initially released as a beta.

Minecraft 1.21.1 will still be fully supported along with 1.21.3+

Changelog:

• Updated to 1.21.3
• Fixed #161: Armor trims are randomly culled with Iris
• Almost all recipes were transferred to datagen, and have been given new IDs. When loading an old world for the first time you may see a large number of warnings and errors related to missing recipe advancements and recipes; these can be safely ignored.
• Crafting Fur Padding Polar Bear Fur Tufts is now shapeless
• Rabbit hide can now craft fur armor
• Renamed the attribute frostiful:generic.ice_breaker_damage to frostiful:ice_breaker_damage in line with vanilla changes. Existing worlds will be datafixed to support this change.
• Trial Spawner configs from the Frostologer's Castle have been transferred to datapack registries
• Gave new textures to the Banner Pattern items in line with vanilla changes
• Renamed the Banner Pattern items in line with vanilla changes
• Renamed the Smithing Templates in line with vanilla changes