feat(notification) : add NotificationService and UserRepository::findByRole

src/Repository/UserRepository.php

@@ -17,4 +17,17 @@ class UserRepository extends ServiceEntityRepository
     {
         parent::__construct($registry, User::class);
     }
+
+    /**
+     * @return User[]
+     */
+    public function findByRole(string $role): array
+    {
+        return $this->createQueryBuilder('u')
+            ->where('u.roles LIKE :role')
+            ->setParameter('role', '%"'.$role.'"%')
+            ->getQuery()
+            ->getResult()
+        ;
+    }
 }