add poweroff command

hc

2023-12-14 982b8cc116118b3463d3f332581945625722acd8

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# Locally calculated
sha256    e2dcfd9d28928d8d8f03381571a23442b3c50d48d343bc40a1a07d01662738d1    usb-modeswitch-data-20170205.tar.bz2