User can retrieve logistics objects via GET request

As a user, I'd like to retrieve an existing (previously created) logisticts object via REST API.

Acceptance criteria

New REST endpoint implemented to request an existing logistics object with a given ID via GET request:

• Endpoint defined via Swagger/openAPI. Interface generated.
• ID of logistics object passed via path parameter.
• Requested logistcis object returned in JSON-LD format.
• Embedded Object Properties are also returned (embedded).
• LO references are returned as link (if created as such).