File _service of Package qalculate-gtk

<services>
  <service name="download_url">
    <param name="host">github.com</param>
    <param name="protocol">https</param>
    <param name="path">/Qalculate/qalculate-gtk/releases/download/v5.8.2/qalculate-gtk-5.8.2.tar.gz</param>
  </service>
</services>