/usr/include/KF5/pimcommonakonadi/ is in libkf5pimcommon-dev 4:17.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/pimcommonakonadi/annotationdialog.h
/usr/include/KF5/pimcommonakonadi/checkedcollectionwidget.h
/usr/include/KF5/pimcommonakonadi/collectionaclpage.h
/usr/include/KF5/pimcommonakonadi/collectionannotationsattribute.h
/usr/include/KF5/pimcommonakonadi/collectiontypeutil.h
/usr/include/KF5/pimcommonakonadi/contenttypewidget.h
/usr/include/KF5/pimcommonakonadi/createresource.h
/usr/include/KF5/pimcommonakonadi/fetchrecursivecollectionsjob.h
/usr/include/KF5/pimcommonakonadi/genericplugininterface.h
/usr/include/KF5/pimcommonakonadi/imapaclattribute.h
/usr/include/KF5/pimcommonakonadi/imapresourcecapabilitiesmanager.h
/usr/include/KF5/pimcommonakonadi/incidencesforwidget.h
/usr/include/KF5/pimcommonakonadi/mailutil.h
/usr/include/KF5/pimcommonakonadi/manageserversidesubscriptionjob.h
/usr/include/KF5/pimcommonakonadi/pimcommonakonadi_debug.h
/usr/include/KF5/pimcommonakonadi/pimcommonakonadi_export.h
/usr/include/KF5/pimcommonakonadi/plugininterface.h
/usr/include/KF5/pimcommonakonadi/selectmulticollectiondialog.h