Add peer management routes and server configuration services

lib/services/supabase_heartbeat.dart

@@ -0,0 +1,35 @@
+
+// Run a heartbeat to let supabase know that the client is still active.
+
+import 'dart:io';
+import 'dart:isolate';
+import 'dart:math';
+
+import 'package:supabase/supabase.dart';
+import 'package:waylume_server/config/supabase_config.dart';
+
+void initHeartbeat() {
+
+  // Run this on a separate thread.
+  Isolate.spawn((_) async {
+
+    // To avoid server deadlock
+    await Future.delayed(Duration(seconds: Random().nextInt(5)));
+
+    while (true) {
+      DateTime now = DateTime.now().toUtc();
+
+      await SUPABASE_CLIENT
+          .from("waylume_servers")
+          .update({ "last_heartbeat": now.toIso8601String() })
+          .eq("id", fromEnivronment("SERVER_ID")!);
+
+      print("Heartbeat sent to Supabase at ${now.toIso8601String()}");
+
+      // Wait 30 seconds before sending the next heartbeat
+      await Future.delayed(Duration(seconds: 30));
+    }
+
+  }, null);
+
+}