Add support for Import/Export localization map to Viewer
Add support for Import/Export localization map to Viewer

Change-Id: I07413e065fc2d6c6ef0d01ec2641299aaaa36280

IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense,IntelRealSense/librealsense