Add QList to QStringList mapping

QStringList inherits QList and hence must include its header.
This mapping prevents <QTypeInfo> suggestion on QStringList traversal
which was due to QList iterator usage bypassing public header.

qt5_11.imp

@@ -3853,4 +3853,5 @@
   { include: [ "@[\"<](QtQuick/)?qtquickversion\\.h[\">]", "private", "<QtQuick>", "public" ] },
   { include: [ "<QString>", "public", "<QObject>", "public" ] },
   { include: [ "<QFlags>", "public", "<Qt>", "public" ] },
+  { include: [ "@[\"<](QtCore/)?qlist\\.h[\">]", "private", "<QStringList>", "public" ] },
 ]