Move and rename source files

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

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

components/rgbd-sources/src/basesource.hpp

components/rgbd-sources/src/source.cpp

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

...rgbd-sources/src/sources/middlebury/middlebury_source.hpp

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

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

.../rgbd-sources/src/sources/screencapture/screencapture.hpp

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

components/rgbd-sources/test/source_unit.cpp