add UnityGLTF to test list? about gltf-test

[sonygod]

unity can public webgl target. I'll check your code and try to build the sample code in unity.

then PR.

[cx20]

how about add UnityGLTF to test lists?

I'm not familiar with Unity, so it's difficult to prepare the sample code myself.
However, I would like to merge with gltf-test if you can prepare and PR an executable sample like other WebGL libraries.

Or, another proposal may be to prepare a test different from WebGL.
For example, the idea is to individually test applications that support glTF, such as Paint 3D and Office.
In that case, it may be better to divide it into another repository because the concept is different. For example, gltf-app-test.