Creates a Form Field Placement

curl --request POST \
  --url https://api.rootly.com/v1/form_fields/{form_field_id}/placements \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '{
  "data": {
    "type": "form_field_placements",
    "attributes": {
      "form_set_id": "<string>",
      "form": "<string>",
      "position": 123,
      "required": true,
      "required_operator": "and",
      "placement_operator": "and",
      "non_editable": true
    }
  }
}'

{
  "data": {
    "id": "65e868a0-a647-4810-b17e-c89b24a6347c",
    "type": "form_field_placements",
    "attributes": {
      "form_field_id": "bb3acae8-7b0b-4e9f-9953-84fa3f423630",
      "form_set_id": "22f97438-d198-4d6a-bddb-e3b31d563f6a",
      "form": "slack_new_incident_form",
      "position": 1,
      "required": false,
      "placement_operator": "and",
      "required_operator": "and",
      "non_editable": true
    }
  }
}