Be able to get available audio/video devices before starting the video session

[revox-gh]

We would like to show a setup screen prior to starting the actual session, so the user can select an appropriate audio- and video device. Maybe I am wrong, but it seems like this is not possible so far, because we need the meeting session and the meeting session needs to be created from a configuration that requires the server request to start the session.

This would be a great addition to the SDK and make the setup process more convenient. Thank you!

[hokyungh]

Thank you for opening the issue. Just to clarify, you would like to select audio/video device without creating MeetingConfiguration or could you show the screen after creating MeetingSession?

If it is latter, we have DeviceSelectionViewController.

I'll add enhancement label assuming former, but correct me if I am wrong.

[hokyungh]

Actually there is another ticket #223 with same request. Will close this one.