Initial WinUI switch.

Wino.Core.WinUI/Views/Abstract/ManageAccountsPageAbstract.cs

@@ -0,0 +1,7 @@
+using Wino.Core.ViewModels;
+
+namespace Wino.Core.UWP.Views.Abstract;
+
+public abstract class ManageAccountsPageAbstract : BasePage<ManageAccountsPagePageViewModel>
+{
+}

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

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+using Wino.Core.ViewModels;
+
+namespace Wino.Views.Abstract;
+
+public abstract class SettingOptionsPageAbstract : SettingsPageBase<SettingOptionsPageViewModel>
+{
+}

Wino.Core.WinUI/Views/Abstract/SettingsPageAbstract.cs

@@ -0,0 +1,6 @@
+using Wino.Core.UWP;
+using Wino.Core.ViewModels;
+
+namespace Wino.Views.Abstract;
+
+public abstract class SettingsPageAbstract : BasePage<SettingsPageViewModel> { }

Wino.Core.WinUI/Views/Abstract/SettingsPageBase.cs

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+using Microsoft.UI.Xaml;
+using Wino.Core.UWP;
+using Wino.Core.ViewModels;
+
+namespace Wino.Views.Abstract;
+
+public partial class SettingsPageBase<T> : BasePage<T> where T : CoreBaseViewModel
+{
+    public string Title
+    {
+        get { return (string)GetValue(TitleProperty); }
+        set { SetValue(TitleProperty, value); }
+    }
+
+    public static readonly DependencyProperty TitleProperty = DependencyProperty.Register(nameof(Title), typeof(string), typeof(SettingsPageBase<T>), new PropertyMetadata(string.Empty));
+}