Implement countdown counter

Seems this module requires jquery_countdown for the timer, that module however is for 7.x, so I don't think the timer will work without it.

 if (function_exists('jquery_countdown_add') && \Drupal::config('quiz.settings')->get('has_timer', 0) && $quiz->time_limit) {
      jquery_countdown_add('.countdown', [

#3 appears correct

We should remove the countdown

aaron.ferris → changed the visibility of the branch 3444626-remove-countdown-counter to hidden.

aaron.ferris → changed the visibility of the branch 3444626-implement-countdown-counter to hidden.

Initial stab at this, need to test more when I get a bit more time (hopefully tomorrow).

Sorry after speaking with the other maintainer thinks we need to implement something for it, maybe something similar to https://www.drupal.org/project/jquery_countdown_timer →

smustgrave → closed merge request !34

Actually appears to be a duplicate of 📌 Display timer not available Needs work