Pixel Consistency b0.5

This is a big release, adding support for a lot of blocks, a few interesting entities and most GUI elements, as well as support for some outlines with the Highlight mod

Additions:

New Pack Icon
Highlights:
- Dragon Head
- Signs (all variants)
- Wither Skeleton Skull
Entities:
- Baby Wolf
- Elder Guardian
- End Crystal
- Furnace Minecart
- Mooshrooms (red and brown, due to mushroom)
- Moobloom (modded)
- Snow Golem
Blocks:
- Blockstates:
  - Big Dripleaf (4 models)
  - Calibrated Sculk Sensor
  - Mangrove Propagule
  - Potted Mangrove Propagule
  - Raised Rails:
    - Activator Rail (4 models)
    - Detector Rail (4 models)
    - Powered Rail (4 models)
    - Rail (2 models)
  - Sea Pickle (4 models)
  - Sunflower
- Templates:
  - Coral Wall Fan (10 children)
  - Cross (68 children + 1 modded)
  - Flower Pot Cross (28 children)
  - Pointed Dripstone (10 children)
  - Stem Fruit (2 children)
  - Stem Growth (8 models, 2 children each)
  - Template Campfire (2 children)
  - Template Rail Raised (14 children)
  - Tinted Cross (8 children)
  - Tinted Flower Pot Cross (1 child)
GUI:
- Container:
  - Anvil (hammer)
  - Smithing Table (hammer)
- Server List:
  - Join (2 textures)
- Resource Pack List:
  - Select (2 textures)
  - Unselect (2 textures)
  - Widget (modded, recursive resources)
- New World Screen:
  - Footer Separator
  - Header Separator
  - Light Dirt Background
  - Tab (2 textures)
  - Tab Selected (2 textures)
- Options:
  - Options Background
- World List:
  - Error (2 textures)
  - Join (2 textures)
  - Marked Join (2 textures)
  - Warning (2 textures)
Particles:
- Beacon Beam (incomplete)
- End Gateway Beam (incomplete)