Adding a playground project for playing with MudBlazor

Playground/Shared/MainLayout.razor

@@ -0,0 +1,23 @@
+@inherits LayoutComponentBase
+
+
+@Body
+
+
+<MudThemeProvider @ref="@_mudThemeProvider" @bind-IsDarkMode="@_isDarkMode"/>
+<MudDialogProvider/>
+<MudSnackbarProvider/>
+
+@code {
+    private bool _isDarkMode;
+    private MudThemeProvider _mudThemeProvider;
+    
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+        {
+            _isDarkMode = await _mudThemeProvider.GetSystemPreference();
+            StateHasChanged();
+        }
+    }
+}