Just copy the content of any of the directories to start working on an addon.

How to use Construct 3 Release Github Action

Setup C3_AUTH_USER & C3_AUTH_PASSWORD secrets in your repository settings.
In your plugin/behavior config.js, add the addonUrl property pointitng to your construct 3 addon url. (ie .. https://www.construct.net/en/make-games/addons/###/XXX)
During a push to main the workflow will create a new released based on the config.js version and upload release c3addon file to construct 3.

Thanks for #endel for the github action.
https://github.com/endel/construct3-addon-release-github-actions