[DL] Pone Glasses

Some rather casual pony glasses.

Commissioned by:

I was given premission to make a public release.

DL Includes:
- Separate model of glasses for both male and female bodies.
- SMD files for compiling to make those as bodygroup.

Known issues:

1. They disappear at some camera angles when separate version is bonemerged on anthro pony's head.
Fix: Move glasses "rootTransform" bone to the middle of pony's head

2. They work with head bone, any use of nose-related flexes or bone may cause clipping

3. Gmod compatibility - Unknown, probably not working/bugged. I dont know how to make models work with it, I also dont care enough.