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": "4d7c79d4-eb0d-4bc9-b814-350ede1b04ba",
    "type": "form_field_placements",
    "attributes": {
      "form_field_id": "e9d16135-4896-4094-9c18-fbb417a1569a",
      "form_set_id": "5131ea29-b337-4810-a2c1-b1f034bcd5c6",
      "form": "slack_new_incident_form",
      "position": 1,
      "required": false,
      "placement_operator": "and",
      "required_operator": "and",
      "non_editable": true
    }
  }
}