Classes involved are BaseAspect and some derived classes,
LayoutBuilder and VariableChooser.
This is mostly mechanical, with various include/using changes
to make it compile.
Change-Id: I624a457f3555f102e541c4c71e33a9423af32250
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Will be used later in LocalQmlPreviewSupport so add also
export and dependencies in the build system files.
Change-Id: Ie5d26e7b89342c3ae3ff682a73194f240b71c21a
Reviewed-by: hjk <hjk@qt.io>
