Visualization pass is now dedicated to a single objects (pointCloud, mesh, ...)

src/DemoApp/main.cpp

src/libRender/RadiumNBR/Gui/VisualizationGui.cpp

src/libRender/RadiumNBR/Passes/CustomAttribToColorPass.cpp

src/libRender/RadiumNBR/Passes/CustomAttribToColorPass.hpp

src/libRender/RadiumNBR/Renderer/Visualization.cpp

src/libRender/RadiumNBR/Renderer/Visualization.hpp