feat: Enhanced sender avatars with gravatar and favicons integration (#685)

* feat: Enhanced sender avatars with gravatar and favicons integration

* chore: Remove unused known companies thumbnails

* feat(thumbnail): add IThumbnailService and refactor usage

- Introduced a new interface `IThumbnailService` for handling thumbnail-related functionalities.
- Registered `IThumbnailService` with its implementation `ThumbnailService` in the service container.
- Updated `NotificationBuilder` to use an instance of `IThumbnailService` instead of static methods.
- Refactored `ThumbnailService` from a static class to a regular class with instance methods and variables.
- Modified `ImagePreviewControl` to utilize the new `IThumbnailService` instance.
- Completed integration of `IThumbnailService` in the application by registering it in `App.xaml.cs`.

* style: Show favicons as squares

- Changed `hintCrop` in `NotificationBuilder` to `None` for app logo display.
- Added `FaviconSquircle`, `FaviconImage`, and `isFavicon` to `ImagePreviewControl` for favicon handling.
- Updated `UpdateInformation` method to manage favicon visibility.
- Introduced `GetBitmapImageAsync` for converting Base64 to Bitmap images.
- Enhanced XAML to include `FaviconSquircle` for improved UI appearance.

* refactor thumbnail service

* Removed old code and added clear method

* added prefetch function

* Change key from host to email

* Remove redundant code

* Test event

* Fixed an issue with the thumbnail updated event.

* Fix cutted favicons

* exclude some domain from favicons

* add yandex.ru

* fix buttons in settings

* remove prefetch method

* Added thumbnails propagation to mailRenderingPage

* Revert MailItemViewModel to object

* Remove redundant code

* spaces

* await load parameter added

* fix spaces

* fix case sensativity for mail list thumbnails

* change duckdns to google

* Some cleanup.

---------

Co-authored-by: Aleh Khantsevich <aleh.khantsevich@gmail.com>
Co-authored-by: Burak Kaan Köse <bkaankose@outlook.com>

Wino.Mail.ViewModels/MailRenderingPageViewModel.cs

@@ -25,12 +25,14 @@ using Wino.Mail.ViewModels.Data;
 using Wino.Mail.ViewModels.Messages;
 using Wino.Messaging.Client.Mails;
 using Wino.Messaging.Server;
+using Wino.Messaging.UI;
 using IMailService = Wino.Core.Domain.Interfaces.IMailService;
 
 namespace Wino.Mail.ViewModels;
 
 public partial class MailRenderingPageViewModel : MailBaseViewModel,
     IRecipient<NewMailItemRenderingRequestedEvent>,
+    IRecipient<ThumbnailAdded>,
     ITransferProgress // For listening IMAP message download progress.
 {
     private readonly IMailDialogService _dialogService;
@@ -788,4 +790,27 @@ public partial class MailRenderingPageViewModel : MailBaseViewModel,
             Log.Error(ex, "Failed to render mail.");
         }
     }
+
+    public void Receive(ThumbnailAdded message)
+    {
+        UpdateThumbnails(ToItems, message.Email);
+        UpdateThumbnails(CcItems, message.Email);
+        UpdateThumbnails(BccItems, message.Email);
+    }
+
+    private void UpdateThumbnails(ObservableCollection<AccountContactViewModel> items, string email)
+    {
+        if (Dispatcher == null || items.Count == 0) return;
+
+        Dispatcher.ExecuteOnUIThread(() =>
+        {
+            foreach (var item in items)
+            {
+                if (item.Address.Equals(email, StringComparison.OrdinalIgnoreCase))
+                {
+                    item.ThumbnailUpdatedEvent = !item.ThumbnailUpdatedEvent;
+                }
+            }
+        });
+    }
 }