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/Data/AccountContactViewModel.cs

@@ -1,10 +1,17 @@
-using Wino.Core.Domain;
+using System;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Wino.Core.Domain;
 using Wino.Core.Domain.Entities.Shared;
 
 namespace Wino.Mail.ViewModels.Data;
 
-public class AccountContactViewModel : AccountContact
+public partial class AccountContactViewModel : ObservableObject
 {
+    public string Address { get; set; }
+    public string Name { get; set; }
+    public string Base64ContactPicture { get; set; }
+    public bool IsRootContact { get; set; }
+
     public AccountContactViewModel(AccountContact contact)
     {
         Address = contact.Address;
@@ -39,4 +46,7 @@ public class AccountContactViewModel : AccountContact
     /// Display name of the contact in a format: Name <Address>.
     /// </summary>
     public string DisplayName => Address == Name || string.IsNullOrWhiteSpace(Name) ? Address.ToLowerInvariant() : $"{Name} <{Address.ToLowerInvariant()}>";
+
+    [ObservableProperty]
+    public partial bool ThumbnailUpdatedEvent { get; set; }
 }

Wino.Mail.ViewModels/Data/MailItemViewModel.cs

@@ -13,7 +13,7 @@ namespace Wino.Mail.ViewModels.Data;
 public partial class MailItemViewModel(MailCopy mailCopy) : ObservableObject, IMailItem
 {
     [ObservableProperty]
-    private MailCopy mailCopy = mailCopy;
+    public partial MailCopy MailCopy { get; set; } = mailCopy;
 
     public Guid UniqueId => ((IMailItem)MailCopy).UniqueId;
     public string ThreadId => ((IMailItem)MailCopy).ThreadId;
@@ -23,10 +23,13 @@ public partial class MailItemViewModel(MailCopy mailCopy) : ObservableObject, IM
     public string InReplyTo => ((IMailItem)MailCopy).InReplyTo;
 
     [ObservableProperty]
-    private bool isCustomFocused;
+    public partial bool ThumbnailUpdatedEvent { get; set; } = false;
 
     [ObservableProperty]
-    private bool isSelected;
+    public partial bool IsCustomFocused { get; set; }
+
+    [ObservableProperty]
+    public partial bool IsSelected { get; set; }
 
     public bool IsFlagged
     {