Feature/logging

components/renderers/cpp/src/display.cpp

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

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

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

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

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

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

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

components/rgbd-sources/src/calibrate.cpp

components/rgbd-sources/src/disparity.cpp

components/rgbd-sources/src/local.cpp

components/rgbd-sources/src/stereovideo_source.cpp