Separate NodeBasedRenderer interface from FullFeaturedRenderer implementation.

src/Mara/RadiumPlayer.cpp

src/Plugin/NodeRendererPlugin.cpp

src/Plugin/NodeRendererPlugin.hpp

src/libRender/CMakeLists.txt

src/libRender/RadiumNBR/FullFeatureRenderer.cpp

src/libRender/RadiumNBR/FullFeatureRenderer.hpp

src/libRender/RadiumNBR/Gui/FullFeaturedRendererGui.cpp

src/libRender/RadiumNBR/Gui/FullFeaturedRendererGui.hpp

src/libRender/RadiumNBR/NodeBasedRenderer.cpp

src/libRender/RadiumNBR/NodeBasedRenderer.hpp

src/libRender/RadiumNBR/RenderPass.hpp