Replicating the MicroPython REPL across Bluetooth Links

I wanted to be able to run the REPL and program code on an RP2040 over Bluetooth so I could avoid wires and still get into the device if there was some kind of Wi-Fi issue. Blog: https://joe.blog.freemansoft.com/2023/01/fail-my-old-hc-05-bluetooth-module-was.html