Move Deferred Files to Microsoft.Toolkit

Author: michael-hawker

Microsoft.Toolkit.Uwp/Deferred/TypedEventHandlerExtensions.cs renamed to Microsoft.Toolkit.Uwp/Extensions/TypedEventHandlerExtensions.cs

@@ -6,6 +6,7 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.Toolkit.Deferred;
 using Windows.Foundation;
 
 namespace Microsoft.Toolkit.Uwp.Deferred

Microsoft.Toolkit.Uwp/Deferred/DeferredCancelEventArgs.cs renamed to Microsoft.Toolkit/Deferred/DeferredCancelEventArgs.cs

@@ -2,7 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-namespace Microsoft.Toolkit.Uwp.Deferred
+namespace Microsoft.Toolkit.Deferred
 {
     /// <summary>
     /// <see cref="DeferredEventArgs"/> which can also be canceled.

Microsoft.Toolkit.Uwp/Deferred/DeferredEventArgs.cs renamed to Microsoft.Toolkit/Deferred/DeferredEventArgs.cs

@@ -4,7 +4,7 @@
 
 using System;
 
-namespace Microsoft.Toolkit.Uwp.Deferred
+namespace Microsoft.Toolkit.Deferred
 {
     /// <summary>
     /// <see cref="EventArgs"/> which can retrieve a <see cref="EventDeferral"/> in order to process data asynchronously before an <see cref="EventHandler"/> completes and returns to the calling control.

Microsoft.Toolkit.Uwp/Deferred/EventDeferral.cs renamed to Microsoft.Toolkit/Deferred/EventDeferral.cs

@@ -6,7 +6,7 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Microsoft.Toolkit.Uwp.Deferred
+namespace Microsoft.Toolkit.Deferred
 {
     /// <summary>
     /// Deferral handle provided by a <see cref="DeferredEventArgs"/>.

Microsoft.Toolkit.Uwp/Deferred/EventHandlerExtensions.cs renamed to Microsoft.Toolkit/Extensions/EventHandlerExtensions.cs

@@ -5,7 +5,7 @@ Do Not Translate or Localize
 
 This project incorporates components from the projects listed below. The original copyright notices and the licenses under which the .NET Foundation received such components are set forth below. The .NET Foundation reserves all rights not expressly granted herein, whether by implication, estoppel or otherwise.
 
-1.	PedroLamas/DeferredEvents version 1.0.4 (https://github.com/PedroLamas/DeferredEvents), included in Microsoft.Toolkit.Uwp/Deferred.
+1.	PedroLamas/DeferredEvents version 1.0.4 (https://github.com/PedroLamas/DeferredEvents), included in Microsoft.Toolkit/Deferred.
 2.	MichaeIDietrich/UwpNotificationNetCoreTest commit 5c1a4a3 (https://github.com/MichaeIDietrich/UwpNotificationNetCoreTest), used in DesktopNotificationManagerCompat.cs to support .NET Core 3.0.
 3.	lbugnion/mvvmlight commit 4cbf77c (https://github.com/lbugnion/mvvmlight), from which some APIs from the `Microsoft.Toolkit.Mvvm` package take inspiration from.
 4.  PrivateObject/PrivateType (https://github.com/microsoft/testfx/tree/664ac7c2ac9dbfbee9d2a0ef560cfd72449dfe34/src/TestFramework/Extension.Desktop), included in UnitTests.