lnwire: update NodeAnnouncement to handle multiple addresses

This commit modifies address handling in the NodeAnnouncement struct,
switching from net.TCPAddr to []net.Addr. This enables more flexible
address handling with multiple types and multiple addresses for each
node. This commit addresses the first part of issue #131 .

routing/router.go

@@ -693,7 +693,7 @@ func (r *ChannelRouter) processNetworkAnnouncement(msg lnwire.Message) bool {
 
 		node := &channeldb.LightningNode{
 			LastUpdate: msgTimestamp,
-			Address:    msg.Address,
+			Addresses:  msg.Addresses,
 			PubKey:     msg.NodeID,
 			Alias:      msg.Alias.String(),
 		}
@@ -945,7 +945,7 @@ func (r *ChannelRouter) syncChannelGraph(syncReq *syncRequest) error {
 		ann := &lnwire.NodeAnnouncement{
 			Signature: r.fakeSig,
 			Timestamp: uint32(node.LastUpdate.Unix()),
-			Address:   node.Address,
+			Addresses: node.Addresses,
 			NodeID:    node.PubKey,
 			Alias:     alias,
 		}