* Feat: Add Nix support
Adding Nix support. Nixos modules may follow...
Run directly with `nix run github:RightNow-AI/openfang`
There are a bunch of flake outputs (based on cargo workspace)
Focus on these:
* openfang-cli (default)
* openfang-desktop
* nix: cmake depdencency was introduced via llama
* Follow upstream style
