wip: check eligibility based on ski pass availability

src/Twig/AppExtension.php

@@ -25,6 +25,7 @@ class AppExtension extends AbstractExtension
     {
         return [
             new TwigFunction('icon', [AppRuntime::class, 'renderIcon'], ['needs_environment' => true, 'is_safe' => ['html']]),
+            new TwigFunction('is_participant_eligible', [AppRuntime::class, 'isParticipantEligible']),
         ];
     }
 }