Initial web socket client support

frontend/lib/providers/game_messages.dart

@@ -0,0 +1,43 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:frontend/providers/dio.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import 'package:shared_models/room.dart';
+
+part 'game_messages.g.dart';
+
+@riverpod
+class GameMessageNotifier extends _$GameMessageNotifier {
+  @override
+  Stream<GameRoomMessage> build() {
+    return Stream.empty();
+  }
+
+  Future<void> connect(String gameRoomUuid) async {
+    final dio = ref.read(dioProvider);
+    Uri.parse('ws://localhost:8080/room/$gameRoomUuid/ws');
+
+    // connect to websocket and then set stream of websocket to state
+    final wsUrl = Uri.parse('ws://localhost:8080/room/$gameRoomUuid/ws');
+
+    final connection = await WebSocket.connect(wsUrl.toString());
+
+    final Stream<GameRoomMessage> gameRoomStream = connection.map((message) {
+      try {
+        if (message is String) {
+          GameRoomMessage.fromJson(jsonDecode(message) as Map<String, dynamic>);
+        } else {
+          logger.info('Recieved non-string message in socket: $message');
+        }
+      } catch (e) {
+        print('Error parsing message: $e');
+        rethrow;
+      }
+    });
+    gameRoomStream.listen(
+      (event) => state = AsyncValue.data(event),
+    );
+  }
+}