Add the list item requested shortcuts back (#38573)

* [x] Re-adds the context menu shortcut text
* [x] Hooks up the keybindings to the search box so that you can just press the keys while you have an item selected, and do a context command
* [x] Hook these keybindings up to the context flyout itself
* [x] Adds a sample for testing

Solves #38271

src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Messages/PerformCommandMessage.cs

@@ -51,6 +51,12 @@ public record PerformCommandMessage
         Context = context.Unsafe;
     }
 
+    public PerformCommandMessage(CommandContextItemViewModel contextCommand)
+    {
+        Command = contextCommand.Command.Model;
+        Context = contextCommand.Model.Unsafe;
+    }
+
     public PerformCommandMessage(ConfirmResultViewModel vm)
     {
         Command = vm.PrimaryCommand.Model;