Resolves #100 GPU pipeline for vision

applications/calibration/src/stereo.cpp

applications/reconstruct/src/scene_rep_hash_sdf.cu

applications/registration/src/correspondances.cpp

components/rgbd-sources/CMakeLists.txt

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

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

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

components/rgbd-sources/src/calibrate.cpp

components/rgbd-sources/src/calibrate.hpp

components/rgbd-sources/src/disparity.cpp

components/rgbd-sources/src/disparity.hpp

components/rgbd-sources/src/local.cpp

components/rgbd-sources/src/local.hpp

components/rgbd-sources/src/stereovideo.cpp

components/rgbd-sources/src/stereovideo.hpp