Import functionality for wino accounts, calendar sync UI, bunch of shell improvements

Wino.Core.Domain/Interfaces/IShellClient.cs

@@ -51,6 +51,8 @@ public interface ICalendarShellClient : IShellClient
     int SelectedDateNavigationHeaderIndex { get; }
     VisibleDateRange? CurrentVisibleRange { get; }
     string VisibleDateRangeText { get; }
+    bool CanSynchronizeCalendars { get; }
+    ICommand SyncCommand { get; }
     ICommand TodayClickedCommand { get; }
     ICommand DateClickedCommand { get; }
     ICommand PreviousDateRangeCommand { get; }