List agents

curl --request GET \
  --url https://api.eu.volubile.ai/v1/agents \
  --header 'X-Api-Key: <api-key>'

{
  "content": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "telephonyConfiguration": {
        "phoneNumbers": [
          "+33612345678",
          "+33612345679"
        ],
        "sipConnection": {
          "did": "2566458"
        }
      },
      "name": "<string>",
      "type": "INBOUND",
      "active": true,
      "recordable": true
    }
  ],
  "size": 123,
  "page": 123,
  "totalElements": 123,
  "totalPages": 123
}