[GPO] Add policies for configuring utilities enabled states (#21411)

* Add GPOWrapper headers and C++/WinRT library

* Check GPO before starting utilities

* Show message on GPO having disabled preview panes.

* Don't generate thumbnails if GPO disabled

* Fix FancyZonesEditor unable to recognize GPOWrapper

* Move settings view models to the settings project

* Use GPO to block enabling utilities in Settings

* Hide context menu entries when gpo disables utilities

* Apply gpo policies when enabling PowerToys on runner

* Add version and metadata to dll

* Add GPOWrapper to the installer

* Fix MSBuild errors on WPF apps by using Projection

* Signing

* Add gpo files and publish them

* Add GPO policies to the bug report tool

* Add some documentation for using GPO

* Mention support to actual lowest supported version of Windows

* Move PowerToys to the root of administrative templates tree

* Save policies on Software\Policies\PowerToys

* Support both machine and user scopes

* Fix documentation to reference computer and user scopes

* Mention incompatibility with outlook in gpo

* Set a better folder structure for gpo assets

* Move PDF Handler warning to the description

* Update doc/gpo/README.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Add actual minimum version of PowerToys to gpo files

* Fix identation

* Remove GPOWrapper Readme

* Add Active Directory instructions to doc

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

src/modules/previewpane/StlThumbnailProvider/StlThumbnailProvider.cs

@@ -123,6 +123,12 @@ namespace Microsoft.PowerToys.ThumbnailHandler.Stl
                 return;
             }
 
+            if (global::PowerToys.GPOWrapper.GPOWrapper.GetConfiguredStlThumbnailsEnabledValue() == global::PowerToys.GPOWrapper.GpoRuleConfigured.Disabled)
+            {
+                // GPO is disabling this utility.
+                return;
+            }
+
             using (var stream = new ReadonlyStream(this.Stream as IStream))
             {
                 using (var memStream = new MemoryStream())