communication between a client and meshtastic device over serial

• need to adapt from: https://github.com/meshtastic/Meshtastic-arduino
• https://store.rokland.com/products/rak-raspberry-pi-rp2040-core-module-for-lorawan-with-lora-sx1262-us915-mhz-rak11310-pid-116003 seems like a minimal device that would work well for this

Next Step: figure out how tf to get serial I/O on interesting devices

• TI-84: seems to not be viable? MirageOS has functions for using the TI protocol to send bytes but we’d need an intermediary to turn that into the meshtastic serial protocol