Rite of Returning 1.2.3

Soul Spear fixes:
- The uploaded Soul Spear.bbmodel is still copied byte-for-byte and is not modified.
- Fixed spear-tip texture rendering in code by skipping collapsed/zero-area faces on flat Blockbench planes.
- Soul Spear throw is now 100% accurate:
  spear.shoot(look.x, look.y, look.z, 4.0F, 0.0F)
- Throw now travels farther with higher velocity and lower projectile gravity.
- Added Soul Spear to trident item tags:
  data/minecraft/tags/items/tridents.json
  data/forge/tags/items/tridents.json
  data/minecraft/tags/items/enchantable/trident.json
