Automatically reauthenticate when the session token expires

[KonradUdoHannes]

Metabase session tokes expire after two weeks. The metabase client should attempt to automatically fetch a new session token when this happens without the user having to worry about it.

In order to avoid infinite attempts in case of unexpected errors it might be a good idea to only try renewal a fixed number of times. Maybe one attempt might even be enough.