authenticatorData is a bytearray that encodes
Authenticator Data structure returned
by the authenticator attestation response as is.
clientDataJSON contains a JSON-compatible UTF-8 encoded string of the client data which is passed
to the authenticator by the client during the authentication request (see
CollectedClientData)
An passkey authenticator with parsed fields. See field defition below. Can be initialized from [struct RawPasskeyAuthenticator].