Add default configuration for assistants (#52)

app/MindWork AI Studio/Components/Layout/MainLayout.razor

@@ -1,4 +1,4 @@
-@using AIStudio.Settings
+@using AIStudio.Settings.DataModel
 @inherits LayoutComponentBase
 
 <MudPaper Height="calc(100vh);" Elevation="0">

app/MindWork AI Studio/Components/Layout/MainLayout.razor.cs

@@ -1,5 +1,6 @@
 using AIStudio.Components.CommonDialogs;
 using AIStudio.Settings;
+using AIStudio.Settings.DataModel;
 using AIStudio.Tools;
 
 using Microsoft.AspNetCore.Components;
@@ -9,7 +10,7 @@ using DialogOptions = AIStudio.Components.CommonDialogs.DialogOptions;
 
 namespace AIStudio.Components.Layout;
 
-public partial class MainLayout : LayoutComponentBase, IMessageBusReceiver
+public partial class MainLayout : LayoutComponentBase, IMessageBusReceiver, IDisposable
 {
     [Inject]
     private IJSRuntime JsRuntime { get; init; } = null!;
@@ -211,4 +212,13 @@ public partial class MainLayout : LayoutComponentBase, IMessageBusReceiver
             await MessageBus.INSTANCE.SendMessage<bool>(this, Event.RESET_CHAT_STATE);
         }
     }
+
+    #region Implementation of IDisposable
+
+    public void Dispose()
+    {
+        this.MessageBus.Unregister(this);
+    }
+
+    #endregion
 }