committing backlog of work on tracking psmv and psvr

src/xrt/auxiliary/math/m_api.h

src/xrt/auxiliary/math/m_base.cpp

src/xrt/auxiliary/math/m_eigen_interop.h

src/xrt/auxiliary/math/m_track.c

src/xrt/compositor/common/comp_vk_swapchain.c

src/xrt/drivers/montrack/filters/filter_complementary.c

src/xrt/drivers/montrack/filters/filter_complementary.h

src/xrt/drivers/montrack/frameservers/uvc/uvc_frameserver.c

src/xrt/drivers/montrack/mt_device.c

src/xrt/drivers/montrack/optical_tracking/CMakeLists.txt

.../drivers/montrack/optical_tracking/common/calibration.cpp

...rt/drivers/montrack/optical_tracking/common/calibration.h

...s/montrack/optical_tracking/common/calibration_opencv.hpp

...drivers/montrack/optical_tracking/common/opencv_utils.hpp

src/xrt/drivers/montrack/optical_tracking/common/tracker.c

src/xrt/drivers/montrack/optical_tracking/common/tracker.h

src/xrt/drivers/montrack/optical_tracking/track_psvr.cpp

src/xrt/drivers/montrack/optical_tracking/track_psvr.h

...ivers/montrack/optical_tracking/tracker3D_psvr_stereo.cpp

...drivers/montrack/optical_tracking/tracker3D_psvr_stereo.h