enrollTotp method
Enrolls a new TOTP (authenticator app) factor.
Returns an MfaEnrollmentChallenge whose barcodeUri and totpSecret
you present to the user (typically as a QR code). After the user adds the
account in their authenticator app, complete enrollment with verifyOtp.
Implementation
Future<MfaEnrollmentChallenge> enrollTotp() =>
Auth0FlutterWebPlatform.instance.mfaEnrollTotp(_mfaToken);