Migrate Entity Data

[JasperLorelai]

Changelog:

• Migrates options added in Entity Data additions #1056 to their own sections.
• EntityData options are now primarily read from new per-entity config sections (e.g. armor-stand.small, rabbit.type). Older config paths are still supported as a fallback, so existing configurations will continue to work without changes. The wiki reflects the new structure, but old paths remain compatible.
• New EntityData options:
  • Entity:
    • pose - Pose
    • pose-fixed - Boolean,false by default
  • AbstractSkeleton:
    • skeleton.should-burn-in-day - Boolean
  • cat:
    • cat.sound-variant - Cat Sound Variant
  • chicken:
    • chicken.sound-variant - Chicken Sound Variant
  • copper_golem:
    • copper-golem.golem-state - Copper Golem State
  • cow:
    • cow.sound-variant - Cow Sound Variant
  • pig:
    • pig.variant - Pig Variant
    • pig.sound-variant - Pig Sound Variant
  • shulker:
    • shulker.attach-face - Block Face - Only cartesian block faces are allowed (N, E, S, W, up, and down)
    • shulker.peek - Float (0.0 - 1.0)
  • Sittable:
    • sitting - Boolean
  • zombie_nautilus:
    • zombie-nautilus.variant - Zombie Nautilus Variant