WIP massive renderer refactor

applications/reconstruct/CMakeLists.txt

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

components/renderers/cpp/CMakeLists.txt

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

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

components/renderers/cpp/src/splat_params.hpp

components/renderers/cpp/src/splat_render.cpp

components/renderers/cpp/src/splatter.cu

components/renderers/cpp/src/splatter_cuda.hpp

components/rgbd-sources/include/ftl/rgbd/channels.hpp

components/rgbd-sources/include/ftl/rgbd/source.hpp

components/rgbd-sources/include/ftl/rgbd/virtual.hpp

components/rgbd-sources/src/source.cpp

components/rgbd-sources/src/virtual.cpp