USB CDC stops working during coex example

[hrrs01]

I tried to run the coex example on a Beetle esp32c3, when my usb suddenly disconnected, and the next time i tried to connect the esp32 to the desktop, it started giving me FailedEnumeration errors. I suspect strongly its related to something similar to this issue: espressif/arduino-esp32#6264. I reset the chip, by pulling down pin9, and uploading a blinky script, which solved the problem. My guess is that it will be possible to reproduce the same error by using the wifi example. I will try to reproduce later.

For the occational googler, to fix the chip after "bricking" the usb, try pulling gpio9 to ground, while connecting the usb, and upload a different script.

[bjoernQ]

Can you please try the branch in #86

[hrrs01]

Its working now