/usr/ is in libappstreamqt-dev 0.12.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/AppStreamQt/
/usr/include/AppStreamQt/appstreamqt_export.h
/usr/include/AppStreamQt/bundle.h
/usr/include/AppStreamQt/category.h
/usr/include/AppStreamQt/component.h
/usr/include/AppStreamQt/contentrating.h
/usr/include/AppStreamQt/icon.h
/usr/include/AppStreamQt/image.h
/usr/include/AppStreamQt/launchable.h
/usr/include/AppStreamQt/metadata.h
/usr/include/AppStreamQt/pool.h
/usr/include/AppStreamQt/provided.h
/usr/include/AppStreamQt/release.h
/usr/include/AppStreamQt/screenshot.h
/usr/include/AppStreamQt/suggested.h
/usr/include/AppStreamQt/translation.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/AppStreamQt/
/usr/lib/x86_64-linux-gnu/cmake/AppStreamQt/AppStreamQtConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/AppStreamQt/AppStreamQtConfigVersion.cmake
/usr/share/
/usr/share/doc/
/usr/share/doc/libappstreamqt-dev/
/usr/share/doc/libappstreamqt-dev/copyright
/usr/lib/x86_64-linux-gnu/libAppStreamQt.so
/usr/share/doc/libappstreamqt-dev/changelog.Debian.gz