stubber: get_frozen fails for ARDUINO boards that depend on arduino_lib about micropython-stubber HOT 1 OPEN

The root error is :
ValueError("Package 'cmwx1' not found in external library 'arduino-lib' (D:\mypython\micropython-stubber\repos\micropython\ports\renesas-ra\boards\ARDUINO_PORTENTA_C33\$(ARDUINO_LIB_DIR)).")

and that is caused by the arduino-lib submodule not being added/cloned to the micropython/lib/arduino-lib folder.

During build this is doen by the make submodules

a quick workaround it to

1. clone this manually:

...\repos\micropython> git submodule update --init lib/arduino-lib
Submodule 'lib/arduino-lib' (https://github.com/arduino/arduino-lib-mpy.git) registered for path 'lib/arduino-lib'
Cloning into 'D:/mypython/micropython-stubber/repos/micropython/lib/arduino-lib'...
Submodule path 'lib/arduino-lib': checked out '89424753e18ed58b7d8041085c9d2e1d162f09ca'

2. Adjust ARDUINO_LIB_DIR in the environment? allow to find the arduino-lib to repos\micropython\lib\arduino-lib\lib\cmwx1\cmwx1.py

from micropython-stubber.