Add identity first iteration

Hcs.WebApp/Components/Pages/Test/Export.razor

@@ -1,5 +1,6 @@
 @page "/test/export"
 
+@using Microsoft.AspNetCore.Authorization
 @using Hcs.Broker
 @using Hcs.Broker.Logger
 @using Hcs.Broker.MessageCapturer
@@ -8,6 +9,10 @@
 @using Hcs.WebApp.Config
 @using Hcs.WebApp.Utils
 
+@implements IDisposable
+
+@attribute [Authorize]
+
 @inject NavigationManager NavigationManager
 @inject IConfiguration Configuration
 
@@ -82,6 +87,14 @@
         client.SetSigningCertificate(brokerConfig.CertificateSerialNumber);
     }
 
+    public void Dispose()
+    {
+        if (messageCapturer != null)
+        {
+            messageCapturer.OnFileWritten -= OnFileWritten;
+        }
+    }
+
     void OnLog(string log)
     {
         console.Log(log);