Yes There is a script that can do this. Look here
NOTE: For this to work you have to add this to the PKG as a post install script.
It requires a reboot to enable this auto login.

shutdown -r now

Happy to help out more if needed. Slack: Macadmins username: kericson

Also I did this before here.
@bryan.garrant

Thanks, we will take a look. If I understand correctly install the pkg and run the scrip after post install and it will allow for auto-reboot.

@bryan.garrant The PKG has a post-install script inside the PKG, so just one file. I can help you out as a consultant if you want.