Ready Player Me integration

[pjburnhill]

Is your feature request related to a problem? Please describe.
Yes. Ready Player Me GLB avatars don't seem to load in Shot Generator. https://readyplayer.me/

Describe the solution you'd like
Either:

1. Make Ready Player Me avatar GLBs load in Shot Generator, ideally with skeleton mapped so ready for poses.
2. Full integration, utilising RPM REST API - https://docs.readyplayer.me/ready-player-me/what-is-ready-player-me

Describe alternatives you've considered
I tried opening in Blender and re-saving as GLB with no luck. The GLB displays correctly in all online GLB viewers.

Additional context
Here is the avatar GLB I used to test: https://models.readyplayer.me/664777277ad2faec5b6079f0.glb
Also attached: 664777277ad2faec5b6079f0.glb.zip