QmlDesinger: Add MetaType for Import

Change-Id: I7be9bd6c3d03a5b488ee4013b64f9927217f67b3
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

src/plugins/qmldesigner/designercore/include/import.h

@@ -79,4 +79,6 @@ QMLDESIGNERCORE_EXPORT uint qHash(const Import &import);
 
 } // namespace QmlDesigner
 
+Q_DECLARE_METATYPE(QmlDesigner::Import)
+
 #endif // IMPORT_H