[Settings] Aligning XAML across all pages (#12212)

* Updating settings

* OOBE button

* Removed unused namespaces

Co-authored-by: Niels Laute <niels9001@hotmail.com>

src/settings-ui/Microsoft.PowerToys.Settings.UI/Controls/SidePanel/SidePanelLink.cs

@@ -0,0 +1,15 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+namespace Microsoft.PowerToys.Settings.UI.Controls
+{
+    public class SidePanelLink
+    {
+        public string Label { get; set; }
+
+        public Uri Link { get; set; }
+    }
+}