Sphere with clickable faces

[hofk]

@milind_anantwar

Want to make each of the face clickable for highlighting/changing image on click.

Compare with this example @prisoner849 for a cylinder.
https://hofk.de/main/discourse.threejs/2018/selectingFaceindex/selectingFaceindex.html
from the collection discourse.threejs.hofk.de

see Collection of examples from discourse.threejs.org