feat: implement domain guard for commission calculation and enhance representation dashboard

- Added domain guard in CommissionService to ensure commission is calculated only when the appointment is booked under the same representation as the doctor.
- Updated RepresentationController to filter statistics by representation, ensuring accurate data is shown for each representative.
- Introduced new endpoints for the representation dashboard to provide summary statistics, doctor performance, and financial reports.
- Created new pages for RepresentationFinance and RepresentationSettlement to display financial data and allow for settlement requests.
- Added migration to include booking_representation_id in appointments for tracking the representative under which the appointment was booked.

src/Representation/Repository/RepresentationRepository.php

@@ -24,6 +24,11 @@ class RepresentationRepository extends ServiceEntityRepository
         return $this->findOneBy(['user' => $user]);
     }
 
+    public function findActiveByCityId(int $cityId): ?Representation
+    {
+        return $this->findOneBy(['cityId' => $cityId, 'active' => true]);
+    }
+
     public function save(Representation $entity, bool $flush = true): void
     {
         $this->getEntityManager()->persist($entity);