/usr/include/KF5/ is in libkf5dbusaddons-dev 5.44.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/KDBusAddons/
/usr/include/KF5/KDBusAddons/KDBusConnectionPool
/usr/include/KF5/KDBusAddons/KDBusInterProcessLock
/usr/include/KF5/KDBusAddons/KDBusService
/usr/include/KF5/KDBusAddons/KDEDModule
/usr/include/KF5/KDBusAddons/KDEInitInterface
/usr/include/KF5/KDBusAddons/kdbusaddons_export.h
/usr/include/KF5/KDBusAddons/kdbusconnectionpool.h
/usr/include/KF5/KDBusAddons/kdbusinterprocesslock.h
/usr/include/KF5/KDBusAddons/kdbusservice.h
/usr/include/KF5/KDBusAddons/kdedmodule.h
/usr/include/KF5/KDBusAddons/kdeinitinterface.h
/usr/include/KF5/kdbusaddons_version.h