Add StoredObjectPointInTime entity and related functionality

Implemented a new StoredObjectPointInTime entity to manage snapshots of stored objects. This includes related migrations, enum for reasons, repository, and integration with StoredObjectVersion.

src/Bundle/ChillDocStoreBundle/Repository/StoredObjectPointInTimeRepository.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Repository;
+
+use Chill\DocStoreBundle\Entity\StoredObjectPointInTime;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @template-extends ServiceEntityRepository<StoredObjectPointInTime>
+ */
+class StoredObjectPointInTimeRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, StoredObjectPointInTime::class);
+    }
+}