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"
    }
  }
}'

{
  "data": {
    "id": "86d71dc1-aa5b-4e63-b342-57778f2923f9",
    "type": "form_field_placements",
    "attributes": {
      "form_field_id": "767f0a76-c564-42c0-adcb-99f6962e44a5",
      "form_set_id": "15cc01a9-69fe-4a54-99a4-7362c5425e41",
      "form": "web_update_incident_form",
      "position": 1,
      "required": false,
      "placement_operator": "and",
      "required_operator": "and"
    }
  }
}