Black Triangle #2: Shared P2P state across clients

[jonvuri]

Implement a basic version of shared peer-to-peer (P2P) state across connected clients. The state shared should be at least as complex as a queue of objects, and should have strategies to resolve conflicts (i.e. a CRDT). One possible solution is https://syncedstore.org/, but there are probably several others to consider.

Verify:

• Client 1 can connect with client 2 using some sort of shared link or key
• Clients 1 and 2 can both add to the same list and see updates instantly
• Clients 1 and 2 can make edits to any object in the list
• Either client can leave and rejoin with the state being maintained