* Inspector
* changed "SETTINGS" to "DISPLAY"
* new "CAMERA" section: activate camera synchronization + control image overlay
* ImageOverlay: new component to display (undistorted) image on top of the 3D view
* ViewpointCamera: new component that sets up a Camera based on a Viewpoint internal parameter
* Viewer3D: additional ViewpointCamera to perform synchronization with image selection
* Viewer3DSettings: new properties related to camera synchronization mode
