Initial web socket client support

frontend/lib/providers/dio.dart

@@ -1,5 +1,6 @@
 import 'package:dio/dio.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:frontend/providers/auth.dart';
 import 'package:logging/logging.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
@@ -15,11 +16,30 @@ Dio dio(Ref ref) {
     receiveTimeout: const Duration(seconds: 3),
   ));
 
-  dio.interceptors.add(LogInterceptor(responseBody: true));
+  final jwt = ref.watch(jwtNotifierProvider).valueOrNull;
+
+  dio.interceptors.addAll([JwtInterceptor(jwt: jwt), CustomLogInterceptor()]);
+
+  logger.fine('Created new Dio object');
 
   return dio;
 }
 
+// Adds the jwt to
+class JwtInterceptor extends Interceptor {
+  final String? jwt;
+
+  JwtInterceptor({required this.jwt});
+
+  @override
+  void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
+    if (jwt != null) {
+      options.headers['Authorization'] = 'Bearer $jwt';
+    }
+    handler.next(options);
+  }
+}
+
 // Create a custom LogInterceptor using the logger object
 class CustomLogInterceptor extends Interceptor {
   @override