WIP: optical flow filter

components/operators/CMakeLists.txt

components/operators/include/ftl/operators/disparity.hpp

components/operators/src/disparity/optflow_smoothing.cpp

components/operators/src/disparity/optflow_smoothing.cu

components/operators/src/disparity/optflow_smoothing.hpp

components/operators/src/disparity/qsort.h

components/rgbd-sources/CMakeLists.txt

components/rgbd-sources/src/algorithms/fixstars_sgm.cpp

components/rgbd-sources/src/algorithms/fixstars_sgm.hpp

components/rgbd-sources/src/cuda_algorithms.hpp

...ents/rgbd-sources/src/sources/stereovideo/stereovideo.cpp