Implement clickable plaintext links and dark mode fix (#488)

* Plaintext links are now clickable and fixes dark mode.

- Change `AppxPackageDir` path from `C:\Users\bkaan\Desktop\Packages\` to `$(USERPROFILE)\Desktop\Packages\`, fixes error when building release.
- Plaintext links are now clickable, and match the same subtle style as Windows Mail.
- Remove `!important` from inline styles to allow Dark Reader to properly recolor the element.

* Implement setting for clickable plaintext link

Wino.Core.Domain/Interfaces/IPreferencesService.cs

@@ -93,6 +93,11 @@ namespace Wino.Core.Domain.Interfaces
         /// </summary>
         bool RenderStyles { get; set; }
 
+        /// <summary>
+        /// Setting: Set whether plaintext links should be automatically converted to clickable links.
+        /// </summary>
+        bool RenderPlaintextLinks { get; set; }
+
         /// <summary>
         /// Gets the preferred rendering options for HTML rendering.
         /// </summary>