Apply official vrm animation to character to avoid Desynchronization from trait assets

[memelotsqui]

The way how currently animations work in Character studio is complex and not realiable as sometimes it gets desynchronized making loading new traits look awkward.

Lets find a way to implement vrm animation spec to achieve animations and be able to simplify the process.

I've noticed that the vrm exporter from blender already includes a way to export animations:

We can do some testing with an exported animated file from blender and see if it gets support in vrm-three plugin loader

[memelotsqui]

Support VRMA animation, more details and sample animation V-Sekai/godot-vrm#77