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.UWP/Services/PreferencesService.cs

@@ -42,7 +42,12 @@ namespace Wino.Core.UWP.Services
         }
 
         public MailRenderingOptions GetRenderingOptions()
-            => new MailRenderingOptions() { LoadImages = RenderImages, LoadStyles = RenderStyles };
+            => new MailRenderingOptions()
+            {
+                LoadImages = RenderImages,
+                LoadStyles = RenderStyles,
+                RenderPlaintextLinks = RenderPlaintextLinks
+            };
 
         public MailListDisplayMode MailItemDisplayMode
         {
@@ -92,6 +97,12 @@ namespace Wino.Core.UWP.Services
             set => SetPropertyAndSave(nameof(RenderStyles), value);
         }
 
+        public bool RenderPlaintextLinks
+        {
+            get => _configurationService.Get(nameof(RenderPlaintextLinks), true);
+            set => SetPropertyAndSave(nameof(RenderPlaintextLinks), value);
+        }
+
         public bool RenderImages
         {
             get => _configurationService.Get(nameof(RenderImages), true);