Vision sources directly in GUI

applications/gui/src/camera.cpp

applications/gui/src/src_window.cpp

applications/gui/src/src_window.hpp

components/common/cpp/include/ftl/uri.hpp

components/common/cpp/src/uri.cpp

components/common/cpp/test/uri_unit.cpp

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

components/rgbd-sources/src/sources/stereovideo/local.cpp

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

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