Support for WebRTC texture projection

[juancramos]

Sceneform uses SurfaceView component to manage camera render video stream, so there is an compatibility limitation.

We have created an issue in the Sceneform's repository -> google-ar/sceneform-android-sdk#801

[juancramos]

also https://stackoverflow.com/questions/57269896/sceneform-render-webrtc-media-stream-in-to-externaltexture