List Replicas

curl --request GET \
  --url https://tavusapi.com/v2/replicas \
  --header 'x-api-key: <api-key>'

{
  "data": [
    {
      "replica_id": "r783537ef5",
      "replica_name": "My Replica",
      "thumbnail_video_url": "<string>",
      "training_progress": "100/100",
      "status": "completed",
      "created_at": "<string>"
    }
  ]
}