curl --request GET \
  --url https://api.useaira.com/v1/invoices/ \
  --header 'X-API-KEY: <api-key>'

{
  "items": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "customer": {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "name": "<string>",
        "externalId": "<string>"
      },
      "billingAccount": {
        "businessName": "<string>",
        "taxId": "<string>"
      },
      "invoiceNumber": "<string>",
      "invoiceDate": "2023-12-25",
      "dueDate": "2023-12-25",
      "totalAmount": 123
    }
  ],
  "hasMore": true
}