Hostile Neural Networks: Extra Data Models

Fixed the Possessed Hoglin's variant support not loading in [Occultism]
Added Ender Fragments as a drop from the Possesed Endermite [Occultism]
Buffed the drops given by the Wilden Chimera [Ars Nouveau]
Added Tinkers Construct's Necrotic Bone to the Wither Skeleton model

• Adjusted head drops so that variants (e.g. the stray) give 2 instead of 4
• Also added a bunch of heads I missed

Added EnderIO's and Tinkers' Enderman Heads as a drop
Added Deeper, Peeper, and Mime Heads as drops [Caverns & Chasms]
Made the Wild Afrit the main mob on its model [Occultism]
Doubled the RF cost for the Berserker [Galosphere]