Looks like this is an official theme component 
The Github link redirects to the Discourse repository and it’s listed in official.txt in the all-the-themes repo. Would it be possible to update the links in the OP? Then the update_from_meta script in that repo would be able to match the component as being official and wouldn’t try to add it to the third-party file. It was removed from third-party.txt in December after it was added by accident in a prior update. Changing the URL of the repository could prevent that from happening again.
In addition, the official tag and a first post with the typical elements of an official component would be nice.