Library for Hex Module SK6812

[Sebastien]

Hi there,
I created a library to simplify the usage of the Hex Module SK6812.
The library is working, I still have to add more documentation.
You can test it there:
https://github.com/colas-sebastien/m5stack-hex-sk6812-lib

[teastain]

@sebastien Nice to see other enthusiasts contribute to the knowledge base!