Optifine compatibility

Fixed models:

• Chicken
• Cow
• Pig
• Skeleton

• Fixed skeleton model bugs
• Fixed various issues.

Currently the pack might appear broken when using optifine instead of fabric mods. This will be fixed soon.

Fixed textures:

• Enderman
• Blaze
• Piglin brute
• Iron Golem
• Creeper

Fixed models & textures:

• Skeleton
• Chicken
• Pig
• Cow