Add API to check authentication state to Tiqr_Service

[phavekes]

This issue is imported from pivotal - Originaly created at Aug 24, 2022 by Pieter van der Meulen

Stepup-tiqr has a AuthenticationController::authenticationChallengeIsExpired() function that uses a side effect of Tiqr_Service::authenticationUrl(). See:

Stepup-tiqr/src/Controller/AuthenticationController.php

Line 204 in 0c03a0d

private function authenticationChallengeIsExpired(): bool

If this information is required a better method would be to add an API to the Tiqr_Service that provides this information explicitly. E.g. add a getAuthenticationStatus() analogue to Tiqr_Service::getEnrollmentStatus() that provides this information.