Update the repo to be a template, rather than a normal repo

[SebbeJohansson]

To allow others to create multiple "forks" for this base, this repo should be set as a template in github. This allows for multiple versions of it on the same account/owner.
https://docs.github.com/en/repositories/creating-and-managing-repositories/creating-a-template-repository

If an account/owner already has a fork of this project, github will block further forking.

[timmybo5]

Cool, I didn't know this was a thing, I will check it out