feat: splash screen and dialog navigation event

WotBlitzStatisticsPro.Blazor/Shared/NavMenu.razor

@@ -2,6 +2,7 @@
 <div>
     <RadzenPanelMenu Click="@(MenuClicked)">
         <RadzenPanelMenuItem Text="Home" Icon="home"></RadzenPanelMenuItem>
+        <RadzenPanelMenuItem Text="Login with WG.net ID" Icon="vpn_key"></RadzenPanelMenuItem>
         <RadzenPanelMenuItem Text="Search player" Icon="person_search"></RadzenPanelMenuItem>
         <RadzenPanelMenuItem Text="Search clan" Icon="screen_search_desktop"></RadzenPanelMenuItem>
     </RadzenPanelMenu>

WotBlitzStatisticsPro.Blazor/Shared/NavMenuBase.cs

@@ -30,6 +30,9 @@ namespace WotBlitzStatisticsPro.Blazor.Shared
                 case "Home":
                     NavManager.NavigateTo("/");
                     break;
+                case "Login with WG.net ID":
+                    await Mediator.Publish(new LoginToWgMessage());
+                    break;
                 case "Search player":
                     await Mediator.Publish(new OpenSearchDialogMessage(DialogType.FindPlayer));
                     //await SearchDialogService.OpenSearchDialog(DialogType.FindPlayer);