Desire: WiFi NAN integration

I'd love to see a spec/protocol/support for using WiFi Neighbor Awareness Networking (wifi-nan) to find and connect to local iroh systems.

There's a lot a lot a lot of ways to splice this. I don't want to over-specify my ask at this point, because it feels like there's so many ways this could go. I have some early experiments and have started an Android app to explore this. Probably the best entry point at the moment is https://tangled.org/jauntywunderkind.bsky.social/iroh-aware/tree/main/.design/wifi-aware .