List stored files

curl --request GET \
  --url https://convertly.sh/api/files \
  --header 'Authorization: Bearer <token>'

{
  "files": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "filename": "<string>",
      "mime_type": "<string>",
      "size_bytes": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "folder_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "downloadUrl": "<string>"
    }
  ],
  "total": 123
}