File _service of Package mattermost-desktop

<services>
  <service name="download_url">
    <param name="url">https://releases.mattermost.com/desktop/5.10.0/mattermost-desktop-5.10.0-linux-x64.tar.gz</param>
    <param name="filename">mattermost-desktop-5.10.0-linux-x64.tar.gz</param>
  </service>
  <service name="set_version">
    <param name="version">5.10.0</param>
  </service>
</services>