The page at https://wyday.com/limelm/help/turboactivate-wizard/ lists the TurboActivate.exe file for the TurboActivate Wizard. Is there a similar application file for macOS and if so where do I download it?
Nope. The TurboActivate Wizard is Windows only. It uses the TurboActivate API, so you can easily recreate it on any platform.
The easiest thing to do is create a textbox with an "Activate" button.