This commit introduces a MVP for the sovereign computing hackathon. It
provides a Python-based bridge between a local Meshtastic node and an
internet-connected XMPP Multi-User Chat room.
Features:
- `bridge.py`: Uses `meshtastic` and `slixmpp` to bridge messages bidirectionally.
- Properly handles asynchronous/synchronous impedance mismatch between XMPP and serial interfaces.
- Avoids infinite loop echo chambers.
- `flake.nix`: Packages the Python script and its dependencies.
- Exposes a NixOS module for configuring the bridge as a persistent systemd service.
- Requires `--password-file` to prevent exposing XMPP passwords in process listings.
- `README.md`: Explains architecture, usage, and how to configure the NixOS module.
Co-authored-by: jamessucla <2191476+jamessucla@users.noreply.github.com>
