Hot fix for glb bone rotation

[nixon-voxell]

Fix

Previously, bone animation always result in wrong rotation after applying to the glb model.

I applied a fix that resets all the rotation of the bones so that it aligns with the T-pose resting position from mixamo after exporting to bvh.

Changelog

• Edit blender and glb file to rotate bones so that all bones default to (0, 0, 0) (pointing towards the z-axis in blender)
• Remove "parent transform" added to scene for debug scene rotation.
• Unhide MainScene entity.