List folders

curl --request GET \
  --url https://api.openwhispr.com/api/v1/folders/list \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "user_id": "<string>",
      "name": "<string>",
      "is_default": true,
      "sort_order": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ]
}