CmdPal: New Remote Desktop built-in extension (#43090)

This PR introduces a new built-in extension for Remote Desktop users.

It allows you to view past RDP connections, save predefined connections,
and connect to any of them. Or start a new RDP connection.


https://github.com/user-attachments/assets/6a5041a6-5741-4df0-a305-da7166f962e1

### GitHub issue maintenance stuff

Closes #38305

---------

Co-authored-by: Niels Laute <niels.laute@live.nl>
Co-authored-by: Jiří Polášek <me@jiripolasek.com>

src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/MainListPage.cs

@@ -36,6 +36,7 @@ public partial class MainListPage : DynamicListPage,
         "com.microsoft.cmdpal.builtin.websearch",
         "com.microsoft.cmdpal.builtin.windowssettings",
         "com.microsoft.cmdpal.builtin.datetime",
+        "com.microsoft.cmdpal.builtin.remotedesktop",
     ];
 
     private readonly IServiceProvider _serviceProvider;