create an external image component config

curl --request POST \
  --url https://ctl.prod.nuon.co/v1/components/{component_id}/configs/external-image \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "aws_ecr_image_config": {
    "aws_region": "<string>",
    "iam_role_arn": "<string>"
  },
  "image_url": "<string>",
  "tag": "<string>"
}'

{
  "aws_ecr_image_config": {
    "aws_region": "<string>",
    "component_config_id": "<string>",
    "component_config_type": "<string>",
    "created_at": "<string>",
    "created_by": {
      "created_at": "<string>",
      "created_by_id": "<string>",
      "email": "<string>",
      "expires_at": "<string>",
      "id": "<string>",
      "issued_at": "<string>",
      "issuer": "<string>",
      "subject": "<string>",
      "token_type": "auth0",
      "updated_at": "<string>"
    },
    "created_by_id": "<string>",
    "iam_role_arn": "<string>",
    "id": "<string>",
    "updated_at": "<string>"
  },
  "component_config_connection_id": "<string>",
  "created_at": "<string>",
  "created_by": {
    "created_at": "<string>",
    "created_by_id": "<string>",
    "email": "<string>",
    "expires_at": "<string>",
    "id": "<string>",
    "issued_at": "<string>",
    "issuer": "<string>",
    "subject": "<string>",
    "token_type": "auth0",
    "updated_at": "<string>"
  },
  "created_by_id": "<string>",
  "id": "<string>",
  "image_url": "<string>",
  "tag": "<string>",
  "updated_at": "<string>"
}