Shutdown ("Exit", "Stop") now exist

RelayShared/Services/ConsoleCommandService.cs

@@ -0,0 +1,38 @@
+namespace RelayShared.Services;
+
+public static class ConsoleCommandService
+{
+    public static CancellationTokenSource ShutdownTokenSource { get; } = new();
+
+    public static void Start()
+    {
+        Task.Run(() =>
+        {
+            while (!ShutdownTokenSource.IsCancellationRequested)
+            {
+                var input = Console.ReadLine();
+
+                if (string.IsNullOrWhiteSpace(input))
+                    continue;
+
+                HandleCommand(input.Trim().ToLower());
+            }
+        });
+    }
+
+    private static void HandleCommand(string command)
+    {
+        switch (command)
+        {
+            case "exit":
+            case "stop":
+                Console.WriteLine("Shutting down...");
+                ShutdownTokenSource.Cancel();
+                break;
+
+            default:
+                Console.WriteLine($"Unknown command: {command}");
+                break;
+        }
+    }
+}