Construct a new PickledSession, with default values.
Was the session created using a fallback key?
When the session was created.
When the session was last used.
The pickle string holding the Olm Session, as returned by
olm_pickle_session in libolm.
The base64-encoded public curve25519 key of the other user that we share this session with.
A pickled version of a
Session.Holds all the information that needs to be stored in a database to restore an Olm Session. Can be imported into the rust store with #migrateOlmSessions.