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/ListViewModel.cs

@@ -344,6 +344,8 @@ public partial class ListViewModel : PageViewModel, IDisposable
            {
                WeakReferenceMessenger.Default.Send<UpdateCommandBarMessage>(new(item));
 
+               WeakReferenceMessenger.Default.Send<UpdateItemKeybindingsMessage>(new(item.Keybindings()));
+
                if (ShowDetails && item.HasDetails)
                {
                    WeakReferenceMessenger.Default.Send<ShowDetailsMessage>(new(item.Details));