WebUSB class

No timeline for adding this, just bookmarking things.
https://wicg.github.io/webusb/
https://hackaday.com/tag/webusb/
https://web.dev/usb/
https://medium.com/@gerybbg/webusb-by-example-b4358e6a133c
https://github.com/larsgk/web-nrf52-dongle/tree/master/dongle_firmware/src