Can nRFBox Be Ported to ESP32-S3?

Hello! Thanks for making nRFBox.

I have an ESP32-S3 board. The current firmware seems to need GPIO22.. My board does not have GPIO22. I was wondering:
Is the source code available? I mean the Arduino files or other files used to make it.
Is there a version of the firmware that works with ESP32-S3?
Can I change GPIO22 to another pin on my ESP32-S3 board?

Thanks for working on this project!