New Nodes

This version introduces AR and VR, with several new nodes

• sop/cameraWebXRAR adds AR capability to a camera.
• sop/cameraWebXRVR adds VR capability to a camera.
• sop/WebXRAREstimatedLight creates lights based on the webcam feed when in an AR session.
• actor/GetWebXRARSessionProperty: gives access to properties of an AR session.
• actor/GetWebXRControllerProperty: gives access to controllers properties.
• actor/OnWebXRControllerEvent: allows to react to controller events.

And a few non AR/VR nodes:

• cop/cubeMap: loads a cube map
• cop/cubeMapFromScene creates a cube texture map which can be used as an environment map. It is much more performant than using several lights.
• obj/lightProbe and sop/lightProbe: create a light probe
• actor/SetObjectMatrix
• actor/RayFromCamera
• sop/Ring