Create instructions for firmware updates via internet forwarding

[wildcapuchino]

This Merge Request introduces a method to update the firmware of AIO Mario devices over USB by forwarding internet traffic through the host PC. It leverages Linux-specific network commands to set up the local PC as a network bridge between the AIO board's Ethernet interface and the PC's internet connection.

This approach allows AIO Mario internet access for firmware updates even when directly connected via USB, without needing native internet connectivity.