UWP .NET9 (#555)

* Ground work for NET9 UWP switch.

* Add launch settings for Wino.Mail

* Added new test WAP project

* fix platforms in slnx solution

* ManagePackageVersionsCentrally set default

* Fixing assets and couple issues with the new packaging project.

* Add back markdown

* Fix nuget warnings

* FIx error in WAP about build tools

* Add build.props with default language preview

* Some AOT compilation progress.

* More AOT stuff.

* Remove deprecated protocol auth activation handler.

* Fix remaining protocol handler for google auth.

* Even more AOT

* More more AOT fixes

* Fix a few more AOT warnings

* Fix signature editor AOT

* Fix composer and renderer AOT JSON

* Outlook Sync AOT

* Fixing bundle generation and package signing.

---------

Co-authored-by: Burak Kaan Köse <bkaankose@outlook.com>

Wino.Mail/Views/Abstract/MailListPageAbstract.cs

@@ -1,10 +1,6 @@
 using Wino.Core.UWP;
 using Wino.Mail.ViewModels;
 
-namespace Wino.Views.Abstract
-{
-    public class MailListPageAbstract : BasePage<MailListPageViewModel>
-    {
+namespace Wino.Views.Abstract;
 
-    }
-}
+public partial class MailListPageAbstract : BasePage<MailListPageViewModel>;