[Rewrite] Custom Asteroid Models Needed

This issue is a pointer to the main issue at https://gitlab.h08.us/Hob-Co/CoppersModels/issues/1

More asteroid models are required to replace the Mandrac/ce_ls3additional asteroids. This will allow us to get closer to the point of being completely stand-alone and not requiring as many dependencies to install. Also, ce_ls3additionals don't belong to us, are not on the Workshop by their own authors, and should not be distributed by us without permission. Also also, they look kinda bad.