Add AppConfigurations to an AppSurface

POST  /app_surfaces/:app_surface_id/relationships/app_configurations

curl https://reactor.adobe.io/app_surfaces/:app_surface_id/relationships/app_configurations \
  -H "Accept: application/vnd.api+json;revision=1" \
  -H "Content-Type: application/vnd.api+json" \
  -H "Authorization: Bearer [TOKEN]" \
  -H "X-Api-Key: [KEY]" \
  -H "X-Gw-Ims-Org-Id: [ORG_ID]" \
  -X POST \
  -d \
'
{
  "data": [
    {
      "id": "AC384df90891b148598128a5b0be529b6e",
      "type": "app_configurations"
    }
  ]
}'

{
  "data": [
    {
      "type": "app_configurations",
      "id": "AC384df90891b148598128a5b0be529b6e"
    }
  ],
  "links": {
    "related": "https://reactor.adobe.io/app_surfaces/ASc7306afa8f724d7db4ea3c15a3bfbb37/app_configurations",
    "self": "https://reactor.adobe.io/app_surfaces/ASc7306afa8f724d7db4ea3c15a3bfbb37/relationships/app_configurations"
  }
}