캠페인 목록 조회

curl --request GET \
  --url https://client-api.tryvox.co/v3/campaigns \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "<string>",
      "name": "<string>",
      "agent": {
        "agent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "agent_version": "current"
      },
      "from_number": "<string>",
      "total_calls": 123,
      "completed_calls": 123,
      "failed_calls": 123,
      "concurrency": 123,
      "active_concurrency": 123,
      "created_at": 123,
      "presentation_number": "<string>",
      "scheduled_at": 123,
      "finished_at": 123,
      "paused_at": 123,
      "call_time_window": {
        "windows": [
          {
            "start_min": 1,
            "end_min": 123,
            "days": []
          }
        ],
        "timezone": "Asia/Seoul",
        "auto_resume": true
      }
    }
  ],
  "total_count": 123,
  "next_cursor": "<string>"
}