Add European date formats in settings

Author: Yusyuriv

Flow.Launcher/SettingPages/ViewModels/SettingsPaneThemeViewModel.cs

@@ -132,7 +132,9 @@ public class ColorSchemeData : DropdownDataGeneric<ColorSchemes> { }
         "ddd dd'/'MM",
         "dddd dd'/'MM",
         "dddd dd', 'MMMM",
-        "dd', 'MMMM"
+        "dd', 'MMMM",
+        "dd.MM.yy",
+        "dd.MM.yyyy"
     };
 
     public string TimeFormat