feat(preferences): ✨ Add email sync interval setting (#710)

* feat(preferences): ✨ Add email sync interval setting

Introduced a new property `EmailSyncIntervalMinutes` in the `IPreferencesService` interface to allow users to configure the email synchronization interval in minutes. This feature enhances user control over email sync behavior.

• Updated `resources.json` to include translations for the new setting.
• Implemented the logic for the new property in `PreferencesService.cs`, with a default value of 3 minutes.
• Added binding and UI support in `AppPreferencesPageViewModel.cs` and `AppPreferencesPage.xaml` to allow users to modify the sync interval.
• Integrated the new setting into `ServerContext.cs` to dynamically adjust the synchronization timer based on user preferences.

This change improves the user experience by providing customizable email synchronization settings.

* Minimum interval and added an icon.

* Proper SetProperty usage.

* Making sure the minimum sync interval is 1 in the ServerContext.

* Making sure the minimum is applied to first trigger of the sync timer.

---------

Co-authored-by: Burak Kaan Köse <bkaankose@outlook.com>

Wino.Core.UWP/Services/PreferencesService.cs

@@ -290,6 +290,12 @@ public class PreferencesService(IConfigurationService configurationService) : Ob
         set => SaveProperty(propertyName: nameof(WorkingDayEnd), value);
     }
 
+    public int EmailSyncIntervalMinutes
+    {
+        get => _configurationService.Get(nameof(EmailSyncIntervalMinutes), 3);
+        set => SetPropertyAndSave(nameof(EmailSyncIntervalMinutes), value);
+    }
+
     public CalendarSettings GetCurrentCalendarSettings()
     {
         var workingDays = GetDaysBetween(WorkingDayStart, WorkingDayEnd);