Reconnecting media elements to the playback

[avayvod]

Tracking issue for the following problem:

• what happens when the page that is playing a media element remotely navigates / reloads?
• should it be able to reconnect somehow to the remote playback session?

Following the Presentation API experience, the page would get an id from the start() call / onconnected event and then pass it to another call like join(playbackId) to attach the media element to the remote playback session without prompting the user again.