[relay] Feature/relay integration (#2244)

This update adds new relay integration for NetBird clients. The new relay is based on web sockets and listens on a single port.

- Adds new relay implementation with websocket with single port relaying mechanism
- refactor peer connection logic, allowing upgrade and downgrade from/to P2P connection
- peer connections are faster since it connects first to relay and then upgrades to P2P
- maintains compatibility with old clients by not using the new relay
- updates infrastructure scripts with new relay service

management/server/peer.go

@@ -964,7 +964,7 @@ func (am *DefaultAccountManager) updateAccountPeers(ctx context.Context, account
 
 			postureChecks := am.getPeerPostureChecks(account, p)
 			remotePeerNetworkMap := account.GetPeerNetworkMap(ctx, p.ID, customZone, approvedPeersMap, am.metrics.AccountManagerMetrics())
-			update := toSyncResponse(ctx, nil, p, nil, remotePeerNetworkMap, am.GetDNSDomain(), postureChecks, dnsCache)
+			update := toSyncResponse(ctx, nil, p, nil, nil, remotePeerNetworkMap, am.GetDNSDomain(), postureChecks, dnsCache)
 			am.peersUpdateManager.SendUpdate(ctx, p.ID, &UpdateMessage{Update: update})
 		}(peer)
 	}