Implement peerbook or some similar list of peers

[matjazv]

Description

New P2P package needs handling of all (known) peers. List of known peers needs to be saved in non-volatile memory so it can be reused in case of node reset.
It should be possible to provide different lists of peers to internal functions and external packages.

In gossip sub, we need

getConnectedPeers(): []peerID
getBlacklistedPeers(): []peerID

and in the initialization, we want gossipsub to start with

NewGossipSub(&Option{
  seedPeers: []peerID,
  knownPeers: []peerID,
  staticPeers: []peerID,
  blacklistedPeers: []peerID,
})

Acceptance Criteria

• Internal functions and external packages have possibility to get a different lists of peers.
• All new code is unit tested.

Additional Information

• we need to check what we can passed to the gossipsub for the initial state, and discuss the input when creating the option