robots_rviz_panel/plugin_description.xml

<library path="sweet_rviz_panel">
  <class
    name="sweet_rviz_panel/SweetRvizPanel"
    type="sweet_rviz_panel::SweetRvizPanel"
    base_class_type="rviz_common::Panel">
    <description>
      Sweet Robot RViz2 debug panel.
    </description>
  </class>
</library>