Moved expander automation peer into its own namespace

Author: jamesmcroft

Microsoft.Toolkit.Uwp.UI.Controls/Expander/Expander.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
+using Microsoft.Toolkit.Uwp.UI.Automation.Peers;
 using Windows.System;
 using Windows.UI.Xaml;
 using Windows.UI.Xaml.Automation.Peers;

Microsoft.Toolkit.Uwp.UI.Controls/Expander/ExpanderAutomationPeer.cs

@@ -2,11 +2,12 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using Microsoft.Toolkit.Uwp.UI.Controls;
 using Windows.UI.Xaml.Automation;
 using Windows.UI.Xaml.Automation.Peers;
 using Windows.UI.Xaml.Automation.Provider;
 
-namespace Microsoft.Toolkit.Uwp.UI.Controls
+namespace Microsoft.Toolkit.Uwp.UI.Automation.Peers
 {
     /// <summary>
     /// Defines a framework element automation peer for the <see cref="Expander"/> control.