create helix-config-service

Create a new service repository with the name helix-config-service

Stuff you can do yourself

[x] run npm init @adobe/helix-library or npm init @adobe/helix-service
[ ] Add topics to the repository, at least helix
[ ] Add the group "Project Helix Admins" with Admin permissions to the list of collaborators
[ ] Add the group "Project Helix Developers" with Write permissions to the list of collaborators (Project Helix Guests will be taken care of automatically)
[ ] Upload a social media image (use this Spark template)
[ ] Set the repository description
[ ] Set up CircleCI

[ ] Uncomment and adjust the helix-post-deploy/monitoring command in .circleci/config.yaml: decide if your service falls under Development, Publishing or Delivery. (note: failures in the latter two categories will ping on-call engineers on weekends!) See https://status.project-helix.io for reference.
[ ] Add a CIRCLECI_TOKEN to the repository secrets.