This template has been deprecated, we recommend you check out the getting started page of the OWML docs as that guides you through how to use the new template.
When using the new mod template, be sure to toggle the usesNH option to have it include everything required for making a New Horizons addon.
A template project for adding planets to Outer Wilds with New Horizons.
If you don't know how to code or only want to be editing json configs, use the config template.