I haven't I'm afraid...
Did you do your breakout in Eagle? Do you think you could put the schematics and component layout into the Adaptor repo here? http://forum.espruino.com/conversations/259519/#comment12093051
It doesn't have to be specifically for the Pico, but just having the outline would mean an adaptor could be knocked up in no time.
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I haven't I'm afraid...
Did you do your breakout in Eagle? Do you think you could put the schematics and component layout into the Adaptor repo here? http://forum.espruino.com/conversations/259519/#comment12093051
It doesn't have to be specifically for the Pico, but just having the outline would mean an adaptor could be knocked up in no time.