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/modules/previewpane/powerpreview/Resources.resx

@@ -167,5 +167,11 @@
   </data>
   <data name="FileExplorer_Admin_Restart_Warning_Dont_Show_Again" xml:space="preserve">
     <value>Don't show again</value>
-  </data>  
+  </data>
+  <data name="Prevpane_Pdf_Settings_Description" xml:space="preserve">
+    <value>PDF Previewer</value>
+  </data>
+  <data name="Prevpane_Pdf_Settings_Displayname" xml:space="preserve">
+    <value>PDF Previewer</value>
+  </data>
 </root>