feat: implement realistic data seeding for doctors, clinics, and secretaries

- Added seed_realistic_data.php to clean existing data and populate the database with realistic entries for doctors, clinics, and secretaries.
- Created a structured approach to generate 100 doctors per city with diverse specialties and services.
- Implemented database cleanup routines to ensure a fresh start for data seeding.
- Enhanced the DoctorSecretaryRepository with improved comments for clarity.

src/Secretary/Repository/DoctorSecretaryRepository.php

@@ -38,7 +38,7 @@ class DoctorSecretaryRepository extends ServiceEntityRepository
         return $this->findBy(['doctor' => $doctor], ['createdAt' => 'DESC']);
     }
 
-    /** منشیان مطب شخصی یک دکتر (owner_type='doctor') */
+    /** منشی ها مطب شخصی یک دکتر (owner_type='doctor') */
     public function findByDoctorScope(Doctor $doctor): array
     {
         return $this->findBy(
@@ -108,7 +108,7 @@ class DoctorSecretaryRepository extends ServiceEntityRepository
         return $clinic->getDoctors()->contains($doctor);
     }
 
-    /** همه منشیان کلینیک (owner_type='clinic') */
+    /** همه منشی ها کلینیک (owner_type='clinic') */
     public function findByClinic(Clinic $clinic): array
     {
         return $this->createQueryBuilder('s')