EPIC Implement prototype bootstrapping server

[jmday]

As a hApp dev, I can connect to test networks via a bootstrap server so that I don't rely on MDNS (which won't scale).

As a hApp user, I can securely identify other peers to connect to so that I can join the app network.

• Holochain Peer Discovery

For networks that we want to maintain, we will have a node in the network to securely create/update the data in the bootstrap storage. For networks we are not a part of, others may have to maintain their own bootstrap capabilities.

Tasks:

• [ ] Finalize the bootstrap API (as in HackMD - incl. Art, Jamison)
• [ ] Create bootstrap server (in new repo/crate)
• [ ] Update lib3h config array/map to specify bootstrap server(s)
• [ ] Update lib3h to use bootstrap server(s) for node discovery

AC:

• Queries provide an appropriate list of peers in the same network
• Announcements result in the announced peer being available via query of that network

[jmday]

Probably use NodeJS to create a prototype... (eventually leverage for CloudFlare in production)