I've just created a new template and submitted a pull request to add it to the default templates for the Raspberry Pi HAT. This includes the EEPROM and a few options for the power, including powering from the HAT to the Pi (and the required protection). It looks like the previously linked one is MIA. This current version does not have the cutouts for the Display and Camera ribbon connectors.
You can find the template here: Raspberry Pi HAT Template
The Raspberry Pi Foundation HAT design specs