Introduce AuthenticatedXrpcBlueskyApi convenience implementation

[christiandeange]

This implementation will transparently manage the active session and refresh tokens for that BlueskyApi instance as it interacts with session-related APIs.

cc @CanYumusak this should resolve #11 – let me know how it looks for you!

[JayOhEn]

I was actually looking for something like this, will update my lib version once it's available. Thank you!

[Jon6193]

Can this be merged and released in a new version? I'm trying to avoid making these changes locally to use this new class for session management instead

[CanYumusak]

I'm not sure if @christiandeange is waiting for me, but I've given my approval. I won't be able to test it in-depth until after the holiday season but it generally looks good

[christiandeange]

I'm not sure if @christiandeange is waiting for me, but I've given my approval. I won't be able to test it in-depth until after the holiday season but it generally looks good

Just wanted to get external opinion(s) on the API design here. Thanks all! It'll be included in a new release shortly.