Get usage summary

curl --request GET \
  --url https://api.smartlyq.com/v1/me/usage \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "total_requests": 123,
    "total_credits_used": 123
  },
  "meta": {
    "request_id": "<string>",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}