feat: api endpoints and xml sync for contingents data

tests/Form/Service/ParticipantFieldOptionsProviderMandatoryServiceTest.php

@@ -12,8 +12,8 @@ use App\Form\Model\ParticipantDto;
 use App\Form\Service\ParticipantFieldOptionsProvider;
 use App\Service\BookingPriceCalculator;
 use App\Service\InsuranceManager;
-use App\Service\ServiceLabelFormatter;
 use App\Service\ServiceAvailabilityCalculator;
+use App\Service\ServiceLabelFormatter;
 use PHPUnit\Framework\TestCase;
 use Symfony\Contracts\Translation\TranslatorInterface;