Rite of Returning 1.1.3

Scrapper pathing update:
- Added custom Scrapper movement/pathing.
- Scrappers are faster.
- Wild Scrappers fly around randomly when not fighting.
- Scrappers sometimes choose a landing spot.
- Scrappers can land, walk/path around on the ground for a short time, then take off again.
- Tamed Scrappers fly quickly to follow owners.
- Combat behavior retained:
  - fireball attacks from range
  - retreat at 10 blocks
  - melee at 5 blocks
- Real Scrapper bbmodel/textures/animations retained.
