Added PointCloudLayer object definition
Added PointCloudLayer object definition

OpenWebGlobe/WebViewer,robhawkes/WebViewer,robhawkes/WebViewer,robhawkes/WebViewer,OpenWebGlobe/WebViewer,Hvitnov/WebViewer,Hvitnov/WebViewer,robhawkes/WebViewer,OpenWebGlobe/WebViewer,Hvitnov/WebViewer,OpenWebGlobe/WebViewer,Hvitnov/WebViewer