Add engagement relationship to submission creation endpoint
Added engagement relationship to submission creation. Now you can create a submission with an engagement.
{ "data": { "type": "submission", "attributes": { "title": "This is a good title", "description": "This contains a POC" }, "relationships": { "engagement": { "data": { "type": "engagement", "id": "4d7925b2-cfb1-4399-b08b-486699696860" } }, "program": { "data": { "type": "program", "id": "ca64f761-8881-4481-bc15-915b36940002" } } } } } 