add ai recognition: stage 1, works, but doesn't show

Azaion.Annotator/App.xaml.cs

@@ -49,6 +49,7 @@ public partial class App : Application
                 services.AddSingleton<IConfigRepository, FileConfigRepository>();
                 services.AddSingleton<Config>(sp => sp.GetRequiredService<IConfigRepository>().Get());
                 services.AddSingleton<MainWindowEventHandler>();
+                services.AddSingleton<VLCFrameExtractor>();
             })
             .UseSerilog()
             .Build();