Add peer management routes and server configuration services

lib/core/utils.dart

@@ -0,0 +1,29 @@
+
+import 'dart:convert';
+import 'dart:io';
+import 'package:http/http.dart' as http;
+
+/// Get the current WAN IP address of the device.
+Future<String> getWanIp() async {
+  // Get the IP address of the server. https://api.ipify.org?format=json
+  var ipResponse = await http.get(Uri.parse('https://api.ipify.org?format=json'));
+  if (ipResponse.statusCode == 200) {
+    var ipData = jsonDecode(ipResponse.body);
+    return ipData['ip'] as String;
+  } else {
+    throw Exception('Failed to get server IP address');
+  }
+}
+
+/// Check if Wireguard is installed on the system.
+Future<bool> isWireguardInstalled() async {
+  try {
+    var result = await Process.run('wg', ['--version']);
+    return result.exitCode == 0;
+  } catch (e) {
+    print('Error checking WireGuard installation: $e');
+    return false;
+  }
+}
+
+bool get kIsRunningInDocker => File('/.dockerenv').existsSync();