Example — 3D scene (glTF + PBR)

A 3D scene: a glTF box model with a full PBR material (base-colour, normal and
metallic-roughness maps) spinning via its 'Spin' animation clip, a phong-shaded
sphere orbiting it, a moving coloured point light, and an orbiting camera — all
using shared cameras/scenes.

Run:  ./VersoDemo --input data/example-3d.json

CODE:  VersoDemo examples
MUSIC: test.mp3 (placeholder)

If you're using Windows and missing DLLs then install the x64 version of
Microsoft Visual C++ Redistributable for Visual Studio 2019.
