feat: add holiday management endpoints and jalaali-js dependency

- Added a new endpoint to list holidays for a specific doctor.
- Added a new endpoint to delete a holiday, with access control for doctors and admins.
- Implemented a repository method to retrieve all holidays for a doctor.
- Added jalaali-js library to handle date conversions.

src/Appointment/Repository/HolidayRepository.php

@@ -19,6 +19,17 @@ class HolidayRepository extends ServiceEntityRepository
         return $this->findOneBy(['uuid' => $uuid]);
     }
 
+    /** @return Holiday[] */
+    public function findAllByDoctor(Doctor $doctor): array
+    {
+        return $this->createQueryBuilder('h')
+            ->where('h.doctor = :doctor')
+            ->setParameter('doctor', $doctor)
+            ->orderBy('h.startDate', 'DESC')
+            ->getQuery()
+            ->getResult();
+    }
+
     /** @return Holiday[] */
     public function findActiveByDoctor(Doctor $doctor, int $from, int $to): array
     {