Enable PDF files in preview pane (#9088)

## Summary of the Pull Request
This PR enables user to preview PDF files in the Explorer preview pane
and in Outlook. 

**What is this about:**
Windows does not support out of the box experience for previewing PDF
files in the preview pane. Users need to install third-party software
like Adobe Acrobat reader. The PdfPreviewHandler module enbales the user
to preview PDF files.

**How does someone test / validate:** 
Run the installer, open Explorer and select a PDF file, enable the
preview pane. Maybe need to remove third-party PDF software.

## Quality Checklist

- [X] **Linked issue:** #3548
- [ ] **Communication:** I've discussed this with core contributors in the issue. 
- [X] **Tests:** Added/updated and all pass
- [X] **Installer:** Added/updated and all pass
- [X] **Localization:** All end user facing strings can be localized
- [ ] **Docs:** Added/ updated
- [x] **Binaries:** Any new files are added to WXS / YML
   - [ ] No new binaries
   - [x] YML for signing
   - [x] WXS for installer

src/settings-ui/Microsoft.PowerToys.Settings.UI.Library/ViewModels/PowerPreviewViewModel.cs

@@ -49,10 +49,12 @@ namespace Microsoft.PowerToys.Settings.UI.Library.ViewModels
             _svgRenderIsEnabled = Settings.Properties.EnableSvgPreview;
             _svgThumbnailIsEnabled = Settings.Properties.EnableSvgThumbnail;
             _mdRenderIsEnabled = Settings.Properties.EnableMdPreview;
+            _pdfRenderIsEnabled = Settings.Properties.EnablePdfPreview;
         }
 
         private bool _svgRenderIsEnabled;
         private bool _mdRenderIsEnabled;
+        private bool _pdfRenderIsEnabled;
         private bool _svgThumbnailIsEnabled;
 
         public bool SVGRenderIsEnabled
@@ -109,6 +111,24 @@ namespace Microsoft.PowerToys.Settings.UI.Library.ViewModels
             }
         }
 
+        public bool PDFRenderIsEnabled
+        {
+            get
+            {
+                return _pdfRenderIsEnabled;
+            }
+
+            set
+            {
+                if (value != _pdfRenderIsEnabled)
+                {
+                    _pdfRenderIsEnabled = value;
+                    Settings.Properties.EnablePdfPreview = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
         public string GetSettingsSubPath()
         {
             return _settingsConfigFileFolder + "\\" + ModuleName;