Demon Eye Phantoms

The texture update is here!

Besides the brand new textures, here's what I've added:

1. More efficient random texture usage.
2. Slightly modified model for more detail.
3. Subtle swaying animation with randomized speed.
4. Two new eye colour variants, and a rare cataracts type.
5. Added variant weights, spawning some colours more frequently than others.

Hope everyone enjoys this update!