macOS 12/13 without need of external libraries

This version provides a Xcode project to compile the app and an universal app (one app for Intel and Apple Silicon Macs).
If you can't open the app because macOS says that is can't verify the app, follow this instructions.

macOS 12/13

Firmata test app compiled on macOS 13 with M1 and macOS 12 compiled with Intel CPU.
Note: this version requires to have the wxwdigets library installed using Homebrew.