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/MessageListPageViewModel.cs

@@ -1,17 +1,19 @@
 using System;
 using System.Collections.Generic;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.Input;
 using Wino.Core.Domain;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Interfaces;
 
 namespace Wino.Mail.ViewModels;
 
-public class MessageListPageViewModel : MailBaseViewModel
+public partial class MessageListPageViewModel : MailBaseViewModel
 {
     public IPreferencesService PreferencesService { get; }
+    private readonly IThumbnailService _thumbnailService;
 
     private int selectedMarkAsOptionIndex;
-
     public int SelectedMarkAsOptionIndex
     {
         get => selectedMarkAsOptionIndex;
@@ -46,9 +48,7 @@ public class MessageListPageViewModel : MailBaseViewModel
     ];
 
     #region Properties
-
     private int leftHoverActionIndex;
-
     public int LeftHoverActionIndex
     {
         get => leftHoverActionIndex;
@@ -61,9 +61,7 @@ public class MessageListPageViewModel : MailBaseViewModel
         }
     }
 
-
     private int centerHoverActionIndex;
-
     public int CenterHoverActionIndex
     {
         get => centerHoverActionIndex;
@@ -77,7 +75,6 @@ public class MessageListPageViewModel : MailBaseViewModel
     }
 
     private int rightHoverActionIndex;
-
     public int RightHoverActionIndex
     {
         get => rightHoverActionIndex;
@@ -89,18 +86,21 @@ public class MessageListPageViewModel : MailBaseViewModel
             }
         }
     }
-
     #endregion
 
-    public MessageListPageViewModel(IMailDialogService dialogService,
-                                    IPreferencesService preferencesService) 
+    public MessageListPageViewModel(IPreferencesService preferencesService, IThumbnailService thumbnailService)
     {
         PreferencesService = preferencesService;
-
+        _thumbnailService = thumbnailService;
         leftHoverActionIndex = availableHoverActions.IndexOf(PreferencesService.LeftHoverAction);
         centerHoverActionIndex = availableHoverActions.IndexOf(PreferencesService.CenterHoverAction);
         rightHoverActionIndex = availableHoverActions.IndexOf(PreferencesService.RightHoverAction);
-
         SelectedMarkAsOptionIndex = Array.IndexOf(Enum.GetValues<MailMarkAsOption>(), PreferencesService.MarkAsPreference);
     }
+
+    [RelayCommand]
+    private async Task ClearAvatarsCacheAsync()
+    {
+        await _thumbnailService.ClearCache();
+    }
 }