Add class that handles server connections via web sockets.

lib/connection/ws_connection.dart

@@ -0,0 +1,27 @@
+import 'package:web_socket_channel/web_socket_channel.dart';
+
+class ServerConnection {
+  late WebSocketChannel channel;
+  late int counter = 0;
+
+  static final ServerConnection _instance = ServerConnection._internal();
+
+  ServerConnection._internal() {
+    channel = WebSocketChannel.connect(
+      Uri.parse('ws://localhost:8080'),
+    );
+  }
+
+  factory ServerConnection() {
+    return _instance;
+  }
+
+  factory ServerConnection.getInstance() {
+    return ServerConnection();
+  }
+
+  void send(String message) {
+    channel.sink.add('$message: $counter');
+    counter++;
+  }
+}