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": "ee6364e3-8fa4-404c-b7ab-cae35832545b",
    "type": "form_field_placements",
    "attributes": {
      "form_field_id": "81539fd5-886c-492f-adfb-379c761e56bd",
      "form_set_id": "3453dd3c-29b4-4f26-b7e2-f65e16150151",
      "form": "slack_new_incident_form",
      "position": 1,
      "required": false,
      "placement_operator": "and",
      "required_operator": "and",
      "non_editable": true
    }
  }
}