Feat/object3d chart

[Nexisato]

Add Object3D class,

• Support data_or_path parameters:
  • str: 3d model files end with: (obj, gltf, glb, babylon, stl, pts.json)
  • bytes.IO: write with pts.json format
  • numpy.array: write with pts.json format,
    array shape requirements:
    (N, 3) : N * (x, y, z) coordinates
    (N, 4) : N * (x, y, z, c) coordinates, where c in range [1, 14]
    (N, 6) : N * (x, y, z, r, g, b) coordinates

Closes: #322