curl --request GET \
  --url http://localhost:3000/v1/performance

{
  "date_range": {
    "start": "<string>",
    "end": "<string>"
  },
  "orders_count": 123,
  "total_sales": 123,
  "avg_fulfillment_time_minutes": 123,
  "rfc_items_count": 123,
  "sweep_items_count": 123,
  "estimated_profit": 123,
  "estimated_profit_percent": 123
}