feat(notification) : add Notification entity, repository, and migration

src/Repository/NotificationRepository.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repository;
+
+use App\Entity\Notification;
+use App\Entity\User;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @extends ServiceEntityRepository<Notification>
+ */
+class NotificationRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, Notification::class);
+    }
+
+    public function countUnreadByUser(User $user): int
+    {
+        return (int) $this->createQueryBuilder('n')
+            ->select('COUNT(n.id)')
+            ->where('n.user = :user')
+            ->andWhere('n.isRead = false')
+            ->setParameter('user', $user)
+            ->getQuery()
+            ->getSingleScalarResult()
+        ;
+    }
+
+    public function markAllReadByUser(User $user): int
+    {
+        return $this->createQueryBuilder('n')
+            ->update()
+            ->set('n.isRead', 'true')
+            ->where('n.user = :user')
+            ->andWhere('n.isRead = false')
+            ->setParameter('user', $user)
+            ->getQuery()
+            ->executeStatement()
+        ;
+    }
+}