cat skull_cleaned and decimated

Cleaned and decimated Cat Skull, original file from selmoth (thank you!).

Fixed most if not all inverse surfaces and broken polys, also removed floating internal bits/ noise.

Decimated polys to ~15% of original, reduced file size from 183mb - 26mb.

Some fidelity was lost, but for fdm printing purposes it is a non issue.

Suggest tilting skull backwards onto ridge on back of skull (teeth pointing up), raft, use supports under skull and under eye socket.