feat(network): introduce relay reservation score

[RolandSherwin]

No description provided.

[maqi]

incoming_connections_from_remote_peer only got pruned when got updated within above block of code
what if entries remained in the container due to some bug/error, which makes it growing infinitely ?

[RolandSherwin]

The only scenario where this can happen is from the below code

 let Some(latest_time) = connections.iter().map(|(_, _, time, _)| time).max() else {
                debug!("The incoming connections from {from_peer:?} are empty. Skipping.");
                continue;
            };

            let Ok(elapsed) = SystemTime::now().duration_since(*latest_time) else {
                debug!("Could not obtain elapsed time.");
                continue;
            };

This can only happen if there is a bug in our code. The cleanup does not depend on the events, it depends on just the MAX_DURATION_TO_TRACK_INCOMING_CONNECTIONS_PER_PEER.

Just depending on a timer is fine because a connection cannot take more than 15s before a ConnectionEstablished or a IncomingConnectionError is emitted tbh.

[maqi]

ok. fine then.

just This can only happen if there is a bug in our code could happen