Add smarts to the UF2 uploader to potentially trigger a reboot if the
device passed in is /dev/tty* or COM*. Will cause reboot to USB
bootloader and standard UF2 upload will happen w/o any user
intervention.
Some paths hardcoded to my custom toolchain build dir, will be updated
to a package.json tools setup soon.
https://github.com/earlephilhower/pico-quick-toolchain
Blink and Fade examples work (i.e. digitalWrite/analogWrite/delay).
Includes a discovery script which will detect RPI Picos in UF2 bootmode.