[讨论] MicroPython中新增在stm32中支持C ++代码和用C ++编写的用户C模块的例子

在最近的更新中，micropython的源码里添加了使用用户C/C++模块的例子，方便增加自己的功能模块。

stm32: Support C++ code and user C modules written in C++.

Also build user C modules as part of the stm32 CI.

https://github.com/micropython/micropython/commit/97960dc7deb7a0e691fca5944402cd03386b744b