Nice Mob Variants

Changes:

• Frog Feeder now emit a block update when Food Mobs are being spawned
• Updated Textures for Timber Wolf variant
• Added "Baby" textures for all custom Mob Variants (Cat, Chicken, Cow, Pig, Wolf)
• Added Cold Yellow Cow variant (Spawns in the same biomes as Vanilla Cold variant)
• Added Warm Brown Cow variant (Spawns in the same biomes as Vanilla warm variant)
• Added Sniffer Cow variant (Spawns in Sunflower Plains & Flower Forests. Drops Torchflower/Pitcher Plant)
• Added Frozen Frog variant (Can be bred in Ice Spike Biomes. Drops Ice when eating)
• Added Goose Chicken variant (Spawns in Old Growth Spruce/Pine Taiga & Dark Forests)
• Added Swamp Zombie Nautilus variant (Spawns in Swamp & Mangrove Swamp Biomes)
• Wandering Trader Mob variants now spawn less often with a Wandering Trader
• Added Livestock Breeder Block:
  • Can be crafted from 8 Hay Blocks and a Barrel
  • When placed makes Livestock Animals (Sheeps, Pigs, Rabbits, Cows, Chickens) breed every 10 minutes
  • Emits a block update whenever breeding has started
• Changed & improved how custom sounds for Mob variants work:
  • Mob Variants with custom sounds now play them like vanilla Mobs
  • Creeper Cat variant now uses Creeper Mob sounds for some of its sounds
  • Sniffer Cow variant uses Sniffer Mob sounds
  • Creaking Wolf variant now use Creaking Mob Sounds
  • Ender Pig, Chicken, Cow variants now use a mix of Enderman & Endermite sounds
  • Skeleton Cat, Chicken, Cow, Pig, Wolf variants now use Skeleton sounds
  • Strider Chicken variant now uses Strider sounds
  • Rooster Chicken variants crowing sound is now it's natural ambient sound for adults
  • Pigeons Chicken variants cooing sound is now it's natural ambient sound for adults
  • Ostrich Chicken variants grunting sound is now it's natural ambient sound for adults
  • Duck Chicken variants quacking sound is now it's natural ambient sound for adults

Fixes:

• Cold White Cow variant using the wrong tag list for biomes to spawn in
• Dark Brown Chicken variants spawn biomes not set correctly
• Added missing lang key for Pigeon Egg