Add RemoveOldAuditCronJob to clean up outdated audit trails

- Introduced `RemoveOldAuditCronJob` class implementing `CronJobInterface` to delete old audit trails based on configured retention period.
- Added `deleteBefore` method to `AuditTrailRepository` to handle removal of records older than the specified date.
- Created `RemoveOldAuditCronJobTest` to ensure correct functionality for job execution and canRun logic.
- Updated DI configuration to include the `delete_after` parameter for audit trail retention settings.

src/Bundle/ChillMainBundle/Repository/AuditTrailRepository.php

@@ -85,6 +85,15 @@ class AuditTrailRepository extends ServiceEntityRepository
             ->getQuery()->getSingleScalarResult();
     }
 
+    public function deleteBefore(\DateTimeImmutable $date): void
+    {
+        $this->createQueryBuilder('audit')
+            ->delete()
+            ->where('audit.occurredAt < :date')
+            ->setParameter('date', $date, Types::DATETIMETZ_IMMUTABLE)
+            ->getQuery()->execute();
+    }
+
     /**
      * @param array{subjects?: list<Subject>, from_date?: \DateTimeImmutable, to_date?: \DateTimeImmutable, by_users?: list<User>} $criteria
      */