Get combined revenue and cost analytics

curl --request POST \
  --url https://api.cloud.flexprice.io/v1/costs/analytics \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "end_time": "<string>",
  "expand": [
    "<string>"
  ],
  "external_customer_id": "<string>",
  "feature_ids": [
    "<string>"
  ],
  "limit": 123,
  "offset": 123,
  "start_time": "<string>"
}
'

{
  "cost_analytics": [
    {
      "cost_by_period": [
        {
          "cost": "<string>",
          "event_count": 123,
          "quantity": "<string>",
          "timestamp": "<string>"
        }
      ],
      "costsheet_id": "<string>",
      "currency": "<string>",
      "customer_id": "<string>",
      "external_customer_id": "<string>",
      "meter": {
        "aggregation": {
          "bucket_size": "MINUTE",
          "field": "<string>",
          "multiplier": "<string>",
          "type": "COUNT"
        },
        "created_at": "<string>",
        "created_by": "<string>",
        "environment_id": "<string>",
        "event_name": "<string>",
        "filters": [
          {
            "key": "<string>",
            "values": [
              "<string>"
            ]
          }
        ],
        "id": "<string>",
        "name": "<string>",
        "reset_usage": "BILLING_PERIOD",
        "status": "published",
        "tenant_id": "<string>",
        "updated_at": "<string>",
        "updated_by": "<string>"
      },
      "meter_id": "<string>",
      "meter_name": "<string>",
      "price": {
        "amount": "<string>",
        "billing_cadence": "RECURRING",
        "billing_model": "FLAT_FEE",
        "billing_period": "MONTHLY",
        "billing_period_count": 123,
        "conversion_rate": "<string>",
        "created_at": "<string>",
        "created_by": "<string>",
        "currency": "<string>",
        "description": "<string>",
        "display_amount": "<string>",
        "display_price_unit_amount": "<string>",
        "end_date": "<string>",
        "entity_id": "<string>",
        "entity_type": "PLAN",
        "environment_id": "<string>",
        "group_id": "<string>",
        "id": "<string>",
        "invoice_cadence": "ARREAR",
        "lookup_key": "<string>",
        "metadata": {},
        "meter_id": "<string>",
        "parent_price_id": "<string>",
        "price_unit": "<string>",
        "price_unit_amount": "<string>",
        "price_unit_id": "<string>",
        "price_unit_tiers": [
          {
            "flat_amount": "<string>",
            "unit_amount": "<string>",
            "up_to": 123
          }
        ],
        "price_unit_type": "FIAT",
        "start_date": "<string>",
        "status": "published",
        "tenant_id": "<string>",
        "tier_mode": "VOLUME",
        "tiers": [
          {
            "flat_amount": "<string>",
            "unit_amount": "<string>",
            "up_to": 123
          }
        ],
        "transform_quantity": {
          "divide_by": 123,
          "round": "<string>"
        },
        "trial_period": 123,
        "type": "USAGE",
        "updated_at": "<string>",
        "updated_by": "<string>"
      },
      "price_id": "<string>",
      "properties": {},
      "source": "<string>",
      "total_cost": "<string>",
      "total_events": 123,
      "total_quantity": "<string>"
    }
  ],
  "currency": "<string>",
  "end_time": "<string>",
  "margin": "<string>",
  "margin_percent": "<string>",
  "roi": "<string>",
  "roi_percent": "<string>",
  "start_time": "<string>",
  "total_cost": "<string>",
  "total_revenue": "<string>"
}