New device: Raspberry Pi Zero with Ethernet over USB enabled

As mentioned in #151 (closed), the Raspberry Pi Zero doesn't have an ethernet port (photo), so this makes it quite complicated to connect to the device from a fresh install, because wifi/bluetooth/serial/... are not configured.

With this new package, the device starts with the microUSB configured as Ethernet and the dhcpd is running on the RPI, so you can simply connect it to a computer and connect with SSH in order to configure it.

Some photos:

Closes: #151 (closed)