We're excited that you show interest in creating and submitting courses to Github Learning Lab. Currently, this is not a feature, but it is something we are exploring as a team on adding in the near future.
@ajtruex just wanted to follow up on @a-a-ron's comment. Since your initial request, we've launched a beta for course authors. You can read a little bit about it and apply for the program at the Learning Lab for Organizations page.