Default to running dfu-util via sudo as most machines will not have
the user setup with permissions to access the raw usb device.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a script to help flash Klipper over USB. This tool can instruct
Klipper to enter into bootloader mode and it can help track changes in
device name during that transition.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>