Topic related and parent relations

[rduyme]

OSTrails Request ( CESSDA )

handle "parents" and "related topics".

• Parent topics (In Skosmos - "Broader concepts") would be useful to be shown while presenting the autocomplete options on the client side to remove potential ambiguity for users - it would be nice if we could support it in the response.
• "Related topics" could be an additional operation - that response would serve for providing additional suggestions to users in SKG-IF clients UI.

Topic sources examples:

• ELSST JSON-LD export is available here.
• One example concept on Skosmos UI here.