File _service of Package floorp

<services>
  <service name="download_url">
    <param name="url">https://github.com/Floorp-Projects/Floorp/releases/download/v12.6.0/floorp-linux-x86_64.tar.xz</param>
    <param name="filename">floorp-linux-x86_64.tar.xz</param>
  </service>
</services>