Ground work for Wino Calendar. (#475)

Wino Calendar abstractions.

Wino.Core.UWP/Views/Abstract/SettingOptionsPageAbstract.cs

@@ -0,0 +1,8 @@
+using Wino.Core.ViewModels;
+
+namespace Wino.Views.Abstract
+{
+    public abstract class SettingOptionsPageAbstract : SettingsPageBase<SettingOptionsPageViewModel>
+    {
+    }
+}