A few spawn egg changes.

Spawn eggs were reorganized in 25w46a, but a few things should probably be changed

1. Nautilus should be moved to mounts.

2. Goat and Mooshroom should be moved to farm animals.

3. The "spiders" catergory should be replaced with the "arthropods" catergory, which would include silverfish.

4. The Nether catergory should be reorganized a bit. first animals, which includes Strider, Hoglin, and Zoglin, then, Miscellaneous​, which includes, Ghasts, Happy Ghast, Magma Cube, Wither Skeleton, and Blaze, and then finally, Piglins, which includes Piglin, Piglin Brute, and Zombified Piglin.