Add unique constraints to prevent person_documnt and accompanyingcourse_document with duplicated object_id

This change ensures `object_id` uniqueness within `person_document` and `accompanyingcourse_document` tables. It includes migration scripts and entity annotations to enforce these constraints. This helps maintain data integrity and consistency across the database.

src/Bundle/ChillDocStoreBundle/Entity/Document.php

@@ -40,6 +40,7 @@ class Document implements TrackCreationInterface, TrackUpdateInterface
     #[Assert\Valid]
     #[Assert\NotNull(message: 'Upload a document')]
     #[ORM\ManyToOne(targetEntity: StoredObject::class, cascade: ['persist'])]
+    #[ORM\JoinColumn(name: 'object_id', referencedColumnName: 'id')]
     private ?StoredObject $object = null;
 
     #[ORM\ManyToOne(targetEntity: DocGeneratorTemplate::class)]