define binding address with announced address

[Harshit933]

There are two types of IP addresses for a lightning node: the binding address and the announced address.

The binding address is the IP where the node listens for connections, whereas the announced address is the public-facing IP where the node listens for connections from the public.

Currently, this definition is not included in Lampo, but it should be incorporated at some point.

[vincenzopalazzo]

Adding this to the next milestone