feat: add ui exit on ctrl+c

GSS2.Test/Program.cs

@@ -1,11 +1,15 @@
 using System.Reflection;
+
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging.Console;
+
 using Avalonia;
 using Avalonia.OpenGL.Egl;
+
 using GSS2.Core;
 using GSS2.Core.Logging;
 using GSS2.Core.Analysis.AmineContent.Database;
+
 using ConsoleFormatter = GSS2.Core.Logging.ConsoleFormatter;
 
 namespace GSS2.Test;
@@ -13,6 +17,7 @@ namespace GSS2.Test;
 public class Program
 {
     public static IHost ApplicationHost { get; } = BuildHostApp();
+    public static event ConsoleCancelEventHandler? ShutdownRequested;
 
     [STAThread]
     public static int Main(string[] args)
@@ -33,9 +38,19 @@ public class Program
             Console.WriteLine($"\t--console - in DRM rendering mode do not suppress console output");
             return 0;
         }
+
+        Console.CancelKeyPress += new ConsoleCancelEventHandler(OnProgramShutdown);
+        Console.WriteLine("Press Ctrl+C to shut down.");
+
         return builder.StartWithClassicDesktopLifetime(args);
     }
 
+    private static void OnProgramShutdown(object? sender, ConsoleCancelEventArgs ea)
+    {
+        ShutdownRequested?.Invoke(sender, ea);
+        ea.Cancel = true;
+    }
+
     private static void SilenceConsole()
     {
         new Thread(() =>