reduce mediator duffs

Hyperbar.Windows/Mediators/KeyAcceleratorHandler.cs

@@ -0,0 +1,14 @@
+using Hyperbar.Windows.Interop;
+
+namespace Hyperbar.Windows;
+
+public class KeyAcceleratorHandler(IVirtualKeyboard virtualKeyboard) :
+    IRequestHandler<KeyAcceleratorCommand>
+{
+    public ValueTask<Unit> Handle(KeyAcceleratorCommand command,
+        CancellationToken cancellationToken)
+    {       
+        virtualKeyboard.Send((int)command.Key);
+        return default;
+    }
+}