The ProblemYou want to have a component programatically available to authors without having to enter design mode and add a component for the template.
The SolutionGo to your relevant template's design mode. For this example, we will use the Geometrixx site, located at:
Then edit the components property to contain the path to your component, for example:
Save, and reload the editor, and you should have the component added to your list.