Multipacks Additions: Blockbench models

[nahkd123]

• Blockbench models loader
• Conversion for Blockbench models to Minecraft JSON models
• 23w06a: Blockbench model animations to functions (using item display entities)
• 23w06a: Blockbench models to Minecraft JSON models with item display entities
  • With this, you can spawn Blockbench models with XYZ rotations, quaternions or matrix transformations