adding a getter and types for AuthBundle

[David-Botos]

No description provided.

[mattieruth]

Apologies for silence on this. And thank you for taking the initiative of providing a PR instead of just posting an issue!

The authBundle type is dependent on the transport type, and may not even be used (see the OpenAIRealTimeWebRTCTransport as an example. So I don't think we can properly type it on the Client. The type you have spelled out in this PR is specific to the DailyTransport and is typed there.

Separately, since the AuthBundle is transport-specific, I think it makes sense to add the getter to the transport instead of the client. I'd like to understand the use case your solving for to make sure that a getter for the AuthBundle is what is really wanted (vs. getters for the room_url/token that is used). Once I understand the need, I will close this ticket and open a new one on the transports repo.