Integrate RestaurantsModule into AdminModule; enhance AdminRepository to find admins by phone and restaurant slug using AdminRole; update AuthService to throw specific exception message when admin not found; correct last name in DatabaseSeeder for consistency.

src/seeders/DatabaseSeeder.ts

@@ -440,7 +440,7 @@ export class DatabaseSeeder extends Seeder {
       const admin = em.create(Admin, {
         phone: '09185290775',
         firstName: 'حمید',
-        lastName: 'زرگامی',
+        lastName: 'ضرقامی',
       });
       em.persist(admin);