Support for CH347 based host

[draeron]

What kind of new feature are you looking for?

• Hardware: Support for CH347 based hosts such as https://www.waveshare.com/wiki/USB_TO_UART/I2C/SPI/JTAG
• Software: Windows mostly but could check on other OS

Do you plan to:

• Contribute an initial driver: Maybe
• Write unit tests: No

[maruel]

To clarify, it's a request for support for https://www.wch-ic.com/products/CH347.html