Ghosts

- Added a brand-new creative tab for the mod's items
- Entity spawn eggs are no longer automatically to the vanilla's creative mode tabs
- Added haunted tree
- Added haunted eye & calibrated haunted eye blocks, which output a redstone signal when there are entities infront of them
- Small ghosts will now pick up & plant dropped sapling items
- Kodama can now be bartered with using amethyst shards. They'll drop a random sapling (item tagged as such)
- Fixed z fighting on the small ghost plant texture
- Made regular ghosts slightly more transparent
- Small ghosts no longer phase through blocks
- Fixed a case where kodama head will start tweaking after rendering it while being nearby
- Fixed small ghost red hurt overlay not showing up on its body