Implements #272 Disparity pipeline in reconstruct

components/rgbd-sources/src/frame.cpp

components/rgbd-sources/src/frameset.cpp

components/rgbd-sources/src/group.cpp

components/rgbd-sources/src/source.cpp

components/rgbd-sources/src/sources/ftlfile/file_source.cpp

components/rgbd-sources/src/sources/ftlfile/file_source.hpp

components/rgbd-sources/src/sources/ftlfile/player.cpp

components/rgbd-sources/src/sources/net/net.cpp

components/rgbd-sources/src/sources/net/net.hpp

...s/rgbd-sources/src/sources/realsense/realsense_source.cpp

...nts/rgbd-sources/src/sources/snapshot/snapshot_source.cpp

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

components/rgbd-sources/src/sources/virtual/virtual.cpp

components/rgbd-sources/src/streamer.cpp