QtAbstractItemModel used to be a part of QtDeclarative
and is being moved to QtCore based on API reviews.
Task-number: QTBUG-126976
Task-number: QTBUG-127089
Change-Id: I28a921a113ec4f3ad298bf55b40aea334e7721cf
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
(cherry picked from commit baed8a24d07de87da61e9d5e3dbffc8d8ca92918)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
Soheil Armin