Metadata for glslviewer in testing

<component type="desktop-application">
  <id>glslViewer.desktop</id>
  <name>GlslViewer</name>
  <name xml:lang="en_GB">GlslViewer</name>
  <summary>Shader sandbox for 2D and 3D</summary>
  <description>
    <p>Console-based GLSL Sandbox for 2D/3D shaders</p>
  </description>
  <pkgname>glslviewer</pkgname>
  <launchable type="desktop-id">glslViewer.desktop</launchable>
  <icon type="cached" width="64" height="64">glslviewer_glslViewer.png</icon>
  <icon type="remote" width="64" height="64">g/gl/glslviewer.desktop/042cb09bfc5e8e8626364b2e251f96b1/icons/64x64/glslviewer_glslViewer.png</icon>
  <icon type="stock">glslViewer</icon>
  <categories>
    <category>Graphics</category>
    <category>3DGraphics</category>
    <category>Viewer</category>
  </categories>
  <provides>
    <mediatype>model/lst</mediatype>
    <mediatype>model/ply</mediatype>
    <mediatype>model/obj</mediatype>
    <mediatype>model/gltf-binary</mediatype>
    <mediatype>model/gltf+json</mediatype>
  </provides>
</component>