Implements #311 parallel operator pipelines

applications/gui/src/src_window.cpp

applications/vision/src/main.cpp

...onents/operators/include/ftl/operators/detectandtrack.hpp

components/operators/include/ftl/operators/operator.hpp

components/operators/src/aruco.cpp

components/operators/src/detectandtrack.cpp

components/operators/src/operator.cpp

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

components/rgbd-sources/src/frame.cpp

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