Introduce a service to restore stored object versions along with relevant tests and an API endpoint. This includes database migrations for version relationships, enhancing stored object version tracking.
Added a new class StoredObjectVersionApiController in ChillDocGeneratorBundle which lists versions of a specified stored object. Corresponding unit test has been added as well. Made modifications in `StoredObject.php` to make the versions selectable. Also updated the API specifications to include a new GET route for retrieving versions.
Introduced a new API endpoint to create stored objects with access control for roles 'ROLE_ADMIN' and 'ROLE_USER'. Updated corresponding routes, removed unused dependencies, and added unit tests to ensure functionality.