feat: add listening ports widget for server stats (#483)

Co-authored-by: Luke Gustafson <88517757+LukeGus@users.noreply.github.com>

src/types/stats-widgets.ts

@@ -7,6 +7,20 @@ export type WidgetType =
   | "processes"
   | "system"
   | "login_stats"
+  | "ports";
+
+export interface ListeningPort {
+  protocol: "tcp" | "udp";
+  localAddress: string;
+  localPort: number;
+  state?: string;
+  pid?: number;
+  process?: string;
+}
+
+export interface PortsMetrics {
+  source: "ss" | "netstat" | "none";
+  ports: ListeningPort[];
   | "firewall";
 
 export interface FirewallRule {