File _service of Package stella

<services>
  <service name="format_spec_file" mode="disabled"/>
  <service name="download_files" mode="disabled"/>
  <service name="download_url">
    <param name="host">github.com</param>
    <param name="protocol">https</param>
    <param name="path">/stella-emu/stella/releases/download/6.7/stella-6.7-src.tar.xz</param>
  </service>
</services>