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.Core.Domain/Entities/Shared/Thumbnail.cs

@@ -0,0 +1,14 @@
+using System;
+using SQLite;
+
+namespace Wino.Core.Domain.Entities.Shared;
+
+public class Thumbnail
+{
+    [PrimaryKey]
+    public string Domain { get; set; }
+
+    public string Gravatar { get; set; }
+    public string Favicon { get; set; }
+    public DateTime LastUpdated { get; set; }
+}

Wino.Core.Domain/Interfaces/IPreferencesService.cs

@@ -1,11 +1,12 @@
 using System;
+using System.ComponentModel;
 using Wino.Core.Domain.Enums;
 using Wino.Core.Domain.Models.Calendar;
 using Wino.Core.Domain.Models.Reader;
 
 namespace Wino.Core.Domain.Interfaces;
 
-public interface IPreferencesService
+public interface IPreferencesService: INotifyPropertyChanged
 {
     /// <summary>
     /// When any of the preferences are changed.
@@ -193,6 +194,16 @@ public interface IPreferencesService
     /// </summary>
     bool IsShowActionLabelsEnabled { get; set; }
 
+    /// <summary>
+    /// Setting: Enable/disable Gravatar for sender avatars.
+    /// </summary>
+    bool IsGravatarEnabled { get; set; }
+
+    /// <summary>
+    /// Setting: Enable/disable Favicon for sender avatars.
+    /// </summary>
+    bool IsFaviconEnabled { get; set; }
+
     #endregion
 
     #region Calendar

Wino.Core.Domain/Interfaces/IThumbnailService.cs

@@ -0,0 +1,20 @@
+using System.Threading.Tasks;
+
+namespace Wino.Core.Domain.Interfaces;
+
+public interface IThumbnailService
+{
+    /// <summary>
+    /// Clears the thumbnail cache.
+    /// </summary>
+    Task ClearCache();
+
+    /// <summary>
+    /// Gets thumbnail
+    /// </summary>
+    /// <param name="email">Address for thumbnail</param>
+    /// <param name="awaitLoad">Force to wait for thumbnail loading.
+    /// Should be used in non-UI threads or where delay is acceptable
+    /// </param>
+    ValueTask<string> GetThumbnailAsync(string email, bool awaitLoad = false);
+}

Wino.Core.Domain/Translations/en_US/resources.json

@@ -623,6 +623,11 @@
     "SettingsShowPreviewText_Title": "Show Preview Text",
     "SettingsShowSenderPictures_Description": "Hide/show the thumbnail sender pictures.",
     "SettingsShowSenderPictures_Title": "Show Sender Avatars",
+    "SettingsEnableGravatarAvatars_Title": "Gravatar",
+    "SettingsEnableGravatarAvatars_Description": "Use gravatar (if available) as sender picture",
+    "SettingsEnableFavicons_Title": "Domain icons (Favicons)",
+    "SettingsEnableFavicons_Description": "Use domain favicons (if available) as sender picture",
+    "SettingsMailList_ClearAvatarsCache_Button": "Clear cached avatars",
     "SettingsSignature_AddCustomSignature_Button": "Add signature",
     "SettingsSignature_AddCustomSignature_Title": "Add custom signature",
     "SettingsSignature_DeleteSignature_Title": "Delete signature",