feat(monitoring): improve network activity metrics with live domain request rates and backend identifiers

ts/opsserver/handlers/stats.handler.ts

@@ -302,6 +302,7 @@ export class StatsHandler {
                     startTime: 0,
                     bytesIn: tp?.in || 0,
                     bytesOut: tp?.out || 0,
+                    connectionCount: count,
                   });
                 }