* 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
* allow to solo a 3D media from the GraphEditor by double clicking on a node or an attribute with the Control modifier pressed
* consistent with Viewer3D.MediaLibrary behavior (solo on Ctrl+Click on visibility button)
* handle supported file extensions in Viewer3DSettings
* enable PrimitivePicking to enable picking on point clouds
* use OnDemand render policy
* activate FrustrumCulling + increase far plane
* add management of rasterized OpenGL points via a PointSize render
This commit adds several components to centralize and extend 3D media loading. They are not yet integrated into Viewer3D. The entry point to this system is the MediaLibrary component that:
* can load N medias based on a filepath or load-and-watch node attributes
* provides a cache mechanism to instant-reload medias that were unloaded under certain conditions
* gives access to statistics (vertex/face/camera/textureCount) through a unified interface
