Idea: add TinyRF capability to open the ch55x to 315/433MHz communication

[stripu]

Porting the TinyRF library (https://github.com/pouriap/TinyRF) would really open a lot of possibilities, as it would enable usb port communications to low power RF devices. The library is not too big and it's optimized for low memory devices, so I believe it might suit the ch55x family. Unfortunately I'm not capable of porting something like this, but hopefully someone might :)

Thanks!