Add support for M5StickC-Plus

[scuba-hacker]

Please add board support for M5Stack's M5StickC-Plus.

Requires a different github dependency to M5StickC, including a different platformio.ini file:

https://github.com/m5stack/M5StickC-Plus

https://docs.m5stack.com/en/core/m5stickc_plus

Thanks