Create Recon Ring for Peers

[nathanielc]

Description

We need to gossip peer information around the Ceramic network in order for peers to learn of new peers.

Implementation details:

This will require adding another generic alongside the Interest and Models rings. Therefore this will introduce lots of changes throughout the code base

DOD

• Peer ring Key is a byte representation of the expiration time + did:key of the peer
• Peer ring Value is the Peer struct from AES-258
• Unit tests of syncing peers transitively
• The interest of the Peer sync with another peer needs to be based on the current system time - some window of time.