List thread messages

curl --request GET \
  --url https://api.wacht.dev/ai/actor-project-threads/{thread_id}/messages \
  --header 'Authorization: <api-key>'

{
  "data": [
    {
      "id": "<string>",
      "thread_id": "<string>",
      "execution_run_id": "<string>",
      "timestamp": "2023-11-07T05:31:56Z",
      "content": {},
      "message_type": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "metadata": {}
    }
  ],
  "has_more": true
}