[Feature Request] Show connection status of relays apart from events received in Application Stats

[Sakhalinfox]

The Server Connection info located in Other options Menu > 5. Application Stats currently displays the list of added relays and the number of events received. Some relays have 0 events received, which could indicate that they are either down, not reachable or don't have any events at all.

However, for those that already have events received, but that may have become unreachable later or down, there is currently not a way to determine that through the application stats. Might be good to add a 'Status' column and display Connected, Checking or Disconnected status codes for each of the added relays. This way a I feel a decision can be made by the user to add new relays or remove unreliable relays if needed for their events to be relayed.