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.

package.json

@@ -27,6 +27,7 @@
         "@tanstack/react-query": "^5.0.0",
         "@tanstack/react-table": "^8.0.0",
         "@types/leaflet": "^1.9.21",
+        "jalaali-js": "^1.2.8",
         "leaflet": "^1.9.4",
         "react": "^19.0.0",
         "react-dom": "^19.0.0",