/usr/include/KF5/ is in libkf5ksieve-dev 4:17.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/KManageSieve/
/usr/include/KF5/KManageSieve/SieveJob
/usr/include/KF5/KSieveUi/
/usr/include/KF5/KSieveUi/AbstractMoveImapFolderWidget
/usr/include/KF5/KSieveUi/AbstractRegexpEditorLineEdit
/usr/include/KF5/KSieveUi/CheckScriptJob
/usr/include/KF5/KSieveUi/ManageSieveScriptsDialog
/usr/include/KF5/KSieveUi/ManageSieveTreeView
/usr/include/KF5/KSieveUi/ManageSieveWidget
/usr/include/KF5/KSieveUi/MultiImapVacationDialog
/usr/include/KF5/KSieveUi/MultiImapVacationManager
/usr/include/KF5/KSieveUi/RenameScriptJob
/usr/include/KF5/KSieveUi/SieveDebugDialog
/usr/include/KF5/KSieveUi/SieveEditor
/usr/include/KF5/KSieveUi/SieveEditorWidget
/usr/include/KF5/KSieveUi/SieveImapAccountSettings
/usr/include/KF5/KSieveUi/SieveImapInstance
/usr/include/KF5/KSieveUi/SieveImapInstanceInterface
/usr/include/KF5/KSieveUi/SieveImapInstanceInterfaceManager
/usr/include/KF5/KSieveUi/SieveImapPasswordProvider
/usr/include/KF5/KSieveUi/SieveTreeWidgetItem
/usr/include/KF5/KSieveUi/Util
/usr/include/KF5/KSieveUi/VacationManager
/usr/include/KF5/kmanagesieve/
/usr/include/KF5/kmanagesieve/kmanagesieve_export.h
/usr/include/KF5/kmanagesieve/sievejob.h
/usr/include/KF5/ksieveui/
/usr/include/KF5/ksieveui/abstractmoveimapfolderwidget.h
/usr/include/KF5/ksieveui/abstractregexpeditorlineedit.h
/usr/include/KF5/ksieveui/checkscriptjob.h
/usr/include/KF5/ksieveui/ksieveui_export.h
/usr/include/KF5/ksieveui/managesievescriptsdialog.h
/usr/include/KF5/ksieveui/managesievetreeview.h
/usr/include/KF5/ksieveui/managesievewidget.h
/usr/include/KF5/ksieveui/multiimapvacationdialog.h
/usr/include/KF5/ksieveui/multiimapvacationmanager.h
/usr/include/KF5/ksieveui/renamescriptjob.h
/usr/include/KF5/ksieveui/sievedebugdialog.h
/usr/include/KF5/ksieveui/sieveeditor.h
/usr/include/KF5/ksieveui/sieveeditorwidget.h
/usr/include/KF5/ksieveui/sieveimapaccountsettings.h
/usr/include/KF5/ksieveui/sieveimapinstance.h
/usr/include/KF5/ksieveui/sieveimapinstanceinterface.h
/usr/include/KF5/ksieveui/sieveimapinstanceinterfacemanager.h
/usr/include/KF5/ksieveui/sieveimappasswordprovider.h
/usr/include/KF5/ksieveui/sievetreewidgetitem.h
/usr/include/KF5/ksieveui/util.h
/usr/include/KF5/ksieveui/util_p.h
/usr/include/KF5/ksieveui/vacationmanager.h
/usr/include/KF5/libksieve_version.h