File _service of Package libdecor

<services>
  <service name="download_url">
    <param name="host">gitlab.freedesktop.org</param>
    <param name="protocol">https</param>
    <param name="path">/libdecor/libdecor/-/releases/0.2.3/downloads/libdecor-0.2.3.tar.xz</param>
    <param name="filename">libdecor-0.2.3.tar.xz</param>
  </service>
</services>