Metadata for sourcegit in testing

<component type="desktop-application">
  <id>sourcegit.desktop</id>
  <name>Source Git</name>
  <summary>Open-source &amp; Free Git GUI Client</summary>
  <description>
    <p>Open-source &amp; Free Git GUI Client</p>
  </description>
  <pkgname>sourcegit</pkgname>
  <launchable type="desktop-id">sourcegit.desktop</launchable>
  <icon type="cached" width="64" height="64">sourcegit_sourcegit.png</icon>
  <icon type="remote" width="64" height="64">s/so/sourcegit.desktop/a4573553fe4b1978eb3ba1c79efc781f/icons/64x64/sourcegit_sourcegit.png</icon>
  <categories>
    <category>Development</category>
  </categories>
  <provides>
    <mediatype>inode/directory</mediatype>
  </provides>
</component>