[QuickAccent] Add description of current selected letter (#20587)

* Adding unicode names and adjusting UI (WIP)

* Added changing letter names

* Add optioins to hide description (WIP)

* WIP

* Change to binding property

* Adress PR comments

* Set TextBlock in border

* * Added to settings
* Fixed string showing/not showing one time after switching character
* Removed unneccessairy command in SettingsService.cs
* Moved showdescription enum to settings.ui

* Adding Fluent design :)

* Fix merge errors

* Center list

* Fixed code not working. Accepted some code style changes.

* Merge main in branch #2

* [Quick Accent] support unicode description for UTF-16 surrogate pairs

* [Quick Accent] fix check-spelling-bot errors

* [check-spelling] accept LANGID as correct word

* [Quick Accent] fix delay when calling ShowToolbar for the first time

* [Quick Accent] use toggle switch to turn off/on Unicode description

* [Quick Accent] fix after merge

* [Quick Accent] add UnicodeInformation.dll to installer

Co-authored-by: Niels Laute <niels.laute@live.nl>

src/settings-ui/Settings.UI/Strings/en-us/Resources.resw

@@ -2525,6 +2525,9 @@ Activate by holding the key for the character you want to add an accent to, then
     <value>The continuous capture mode will consume more resources when in use. Also, measurements will be excluded from screenshots and screen capture.</value>
     <comment>pointer as in mouse pointer. Resources refer to things like CPU, GPU, RAM</comment>
   </data>
+  <data name="QuickAccent_Description_Indicator.Header" xml:space="preserve">
+    <value>Show the Unicode code and name of the currently selected character</value>
+  </data>
   <data name="QuickAccent_DisableFullscreen.Header" xml:space="preserve">
     <value>Disable when Game Mode is On</value>
   </data>