[S3] Allow users to make an asset public/private (publication/activation)

Currently, we can have an asset private or public in the external system, however, there is no way of publication/activation of this assets in Mgnl. We need to let our users see whether the asset is private or public (like other apps with green vs red icon) and provide a way of handling those assets

AC

• Action to mark an asset private
• Action to mark an asset public 
• Action Bar - When upload a new resource / editing , the publish / unpublish action should be added 

Dev notes. Implementation like Publication Workflow