Refactor renderer to fix stereo for VR

applications/gui/src/camera.cpp

applications/gui/src/camera.hpp

applications/gui/src/media_panel.cpp

applications/gui/src/screen.cpp

applications/gui/src/src_window.cpp

components/codecs/include/ftl/codecs/channels.hpp

components/common/cpp/include/ftl/cuda_texture.hpp

components/common/cpp/src/cuda_common.cpp

components/renderers/cpp/CMakeLists.txt

components/renderers/cpp/include/ftl/render/CUDARender.hpp

components/renderers/cpp/include/ftl/render/colouriser.hpp

components/renderers/cpp/include/ftl/render/renderer.hpp

components/renderers/cpp/src/CUDARender.cpp

components/renderers/cpp/src/colour_cuda.hpp

components/renderers/cpp/src/colour_util.cu

components/renderers/cpp/src/colouriser.cpp

components/renderers/cpp/src/normals.cu

components/renderers/cpp/src/turbo_map.hpp

components/rgbd-sources/src/frameset.cpp

components/structures/include/ftl/data/frame.hpp