[PowerToys Run] Implemented Setting to Clear Search Query when PowerToys Run is Launched (#4995)

* Implemented Clear Input On Launch

* Move logic to seperate command on viewmodel

* Added Settings Sync
Moved logic from OnDeactivated to OnActivated

* Complete after testing

Co-authored-by: Roy <royvou@hotmailcom>

src/modules/launcher/PowerLauncher/MainWindow.xaml.cs

@@ -151,9 +151,17 @@ namespace PowerLauncher
             _settings.WindowLeft = Left;
         }
 
+        private void OnActivated(object sender, EventArgs e)
+        {
+	        if (_settings.ClearInputOnLaunch)
+	        {
+		        _viewModel.ClearQueryCommand.Execute(null);
+	        }
+        }
+
         private void OnDeactivated(object sender, EventArgs e)
         {
-            if (_settings.HideWhenDeactivated)
+	        if (_settings.HideWhenDeactivated)
             {
                 //(this.FindResource("OutroStoryboard") as Storyboard).Begin();
                 Hide();