re-sort for usb and ethernet tests, spin up ethernet hello world

2023-12_ethernet-real-data-rates.md

code/ethernet/ethernet_sink/sink.py

code/ethernet/ethernet_source/ethernet_source.ino

...serial/serial_multi_sink_asyncio/cobs_usb_serial_async.py

...sb_serial/serial_multi_sink_asyncio/multi_sink_asyncio.py

...b_serial/serial_multi_sink_asyncio/multi_sink_blocking.py

code/usb_serial/serial_multi_sink_asyncio/serial_list.py

.../usb_serial/serial_multi_sink_blocking/cobs_usb_serial.py

..._serial/serial_multi_sink_blocking/multi_sink_blocking.py

code/usb_serial/serial_multi_sink_blocking/serial_list.py

...erial_multi_sink_multiprocessing/cobs_usb_serial_multi.py

..._multi_sink_multiprocessing/multi_sink_multiprocessing.py

...b_serial/serial_multi_sink_multiprocessing/plot_stamps.py

...b_serial/serial_multi_sink_multiprocessing/serial_list.py

code/usb_serial/serial_sink/cobs_usb_serial.py

code/usb_serial/serial_sink/serial_list.py

code/usb_serial/serial_sink/sink.py

code/usb_serial/serial_sink_simple/serial_list.py

code/usb_serial/serial_sink_simple/sink_simple.py

code/usb_serial/serial_source/COBSUSBSerial.cpp