Move 'Media' and 'Functions' subpackages into ChannelFlow subpackage
... so that multiple Deltares packages may live inside the Deltares namespace without needing to modify the 'package.order' file.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
... so that multiple Deltares packages may live inside the Deltares namespace without needing to modify the 'package.order' file.