Metadata for cdogs-sdl in testing

<component type="desktop-application">
  <id>io.github.cxong.cdogs-sdl</id>
  <name>C-Dogs SDL</name>
  <summary>Classic overhead run-and-gun game</summary>
  <project_license>GPL-2.0+</project_license>
  <description>
    <p>
      C-Dogs SDL is an overhead shoot-em-up which lets players work alone and
      cooperatively during missions or fight against each other in the
      “dogfight” deathmatch mode.
    </p>
    <p>
      Customize your player, choose from many weapons, and blast, slide and
      slash your way through over 100 user-created campaigns.
    </p>
  </description>
  <pkgname>cdogs-sdl</pkgname>
  <launchable type="desktop-id">io.github.cxong.cdogs-sdl.desktop</launchable>
  <icon type="remote" width="48" height="48">io/github/cxong.cdogs-sdl/df656136675953a3bf347f5fc0fff86c/icons/48x48/cdogs-sdl_io.github.cxong.cdogs-sdl.png</icon>
  <icon type="cached" width="64" height="64">cdogs-sdl_io.github.cxong.cdogs-sdl.png</icon>
  <icon type="remote" width="64" height="64">io/github/cxong.cdogs-sdl/df656136675953a3bf347f5fc0fff86c/icons/64x64/cdogs-sdl_io.github.cxong.cdogs-sdl.png</icon>
  <icon type="remote" width="128" height="128">io/github/cxong.cdogs-sdl/df656136675953a3bf347f5fc0fff86c/icons/128x128/cdogs-sdl_io.github.cxong.cdogs-sdl.png</icon>
  <icon type="stock">io.github.cxong.cdogs-sdl</icon>
  <url type="homepage">https://cxong.github.io/cdogs-sdl/</url>
  <url type="help">https://github.com/cxong/cdogs-sdl/wiki/Walkthrough</url>
  <categories>
    <category>Game</category>
    <category>ActionGame</category>
  </categories>
  <keywords>
    <keyword>Game</keyword>
    <keyword>Arcade</keyword>
    <keyword>Shooter</keyword>
    <keyword>Retro</keyword>
  </keywords>
  <releases>
    <release type="stable" version="2.1.0" timestamp="1712880000"/>
    <release type="stable" version="2.0.0" timestamp="1708128000"/>
    <release type="stable" version="1.5.0" timestamp="1690502400"/>
    <release type="stable" version="1.4.2" timestamp="1683763200"/>
  </releases>
  <content_rating type="oars-1.0">
    <content_attribute id="violence-cartoon">intense</content_attribute>
    <content_attribute id="violence-fantasy">intense</content_attribute>
    <content_attribute id="violence-bloodshed">mild</content_attribute>
    <content_attribute id="language-humor">mild</content_attribute>
    <content_attribute id="social-chat">mild</content_attribute>
  </content_rating>
</component>