Add BodyPaint v3 App

[JulianGro]

simon_bodypaint3.zip

[AleziaKurdis]

Paint on other avatars should be tested.

Are we ok to release a paint tool that is writing permanent domain entities?
Maybe we could set a lifetime to have this self-cleaned after a time.

The license is only on the main file... is this enough?
also the license refers to fingerPaint.js

[JulianGro]

This was on a public HiFi S3. It referring to fingerPaint is probably because it evolved from that.

I think a high lifetime on painting in world would make sense. Even though you should only be able to paint in domains that you have create permission in.

For the license we generally trust that something created by HiFi is Apache-2.0 unless otherwise stated. All these files were in the apps folder. My understanding is that this app might have been a work in progress as well. Maybe @ctrlaltdavid has something to say on this since they are listed as the original creator.