I had to clean up the code a bit and move it to a public GitHub repository.

https://github.com/leejoramo/macOS-plus-AHK

As others have mentioned it is probably worth looking at Kinto to add macOS keyboard shortcuts to Windows. I started this project years before I learned about Kinto, plus I have most of my other system customizations in here.

Currently my main workstation is KDE/Ubuntu where I use Toshy for the macOS shortcuts, and have customized the rest via KDE shortcut management and my hardware keyboard.

For the 'cycle windows of current app', i've posted a function above https://news.ycombinator.com/item?id=41288792