Model C: Omegacycle DT update

Apparently this was taken down at some point for unknown reasons, so let's take this opportunity to make some updates. Not only has this been made compatible with Dawntrail, I also added some of those fancy new shaders to spice it up a bit. I didn't bother with the non-glowing version because, honestly, I couldn't be bothered, but if you prefer that one you can go into the materials and turn it off pretty easily by setting the emissive to black.

Shoutouts to Yui for showing me how to do shader updates.