Fixed some build errors in the smoke tests

Author: Sergio0694

SmokeTests/Microsoft.Toolkit.Uwp.UI.Animations/MainPage.xaml

@@ -3,7 +3,7 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:local="using:SmokeTest"
-    xmlns:extensions="using:Microsoft.Toolkit.Uwp.UI.Extensions"
+    xmlns:ui="using:Microsoft.Toolkit.Uwp.UI"
     xmlns:animations="using:Microsoft.Toolkit.Uwp.UI.Animations"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
@@ -19,7 +19,7 @@
               Background="Red"
               Canvas.Top="100"
               Canvas.Left="100"
-              extensions:VisualExtensions.CenterPoint="50,50,0">
+              ui:VisualExtensions.CenterPoint="50,50,0">
 
                 <animations:Implicit.ShowAnimations>
                     <animations:TranslationAnimation Duration="0:0:1" From="0, -200, 0" To="0" ></animations:TranslationAnimation>

SmokeTests/Microsoft.Toolkit.Uwp.UI/MainPage.xaml

@@ -3,7 +3,7 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:local="using:SmokeTest"
-    xmlns:extensions="using:Microsoft.Toolkit.Uwp.UI.Extensions"
+    xmlns:ui="using:Microsoft.Toolkit.Uwp.UI"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     mc:Ignorable="d"
@@ -13,9 +13,9 @@
         <Border Height="100"
                 Width="100"
                 Background="Purple"
-                extensions:VisualExtensions.Opacity="0.5"
-                extensions:VisualExtensions.RotationAngleInDegrees="80"
-                extensions:VisualExtensions.Scale="2, 0.5, 1"
-                extensions:VisualExtensions.NormalizedCenterPoint="0.5" />
+                ui:VisualExtensions.Opacity="0.5"
+                ui:VisualExtensions.RotationAngleInDegrees="80"
+                ui:VisualExtensions.Scale="2, 0.5, 1"
+                ui:VisualExtensions.NormalizedCenterPoint="0.5" />
     </Grid>
 </Page>

SmokeTests/Microsoft.Toolkit.Uwp.UI/MainPage.xaml.cs

@@ -5,7 +5,7 @@
 using System;
 using System.Diagnostics;
 using System.Linq;
-using Microsoft.Toolkit.Uwp.UI.Extensions;
+using Microsoft.Toolkit.Uwp.UI;
 using Windows.UI.Xaml.Controls;
 
 namespace SmokeTest

SmokeTests/Microsoft.Toolkit/MainPage.xaml.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.
 
-using Microsoft.Toolkit.Extensions;
+using Microsoft.Toolkit;
 
 namespace SmokeTest
 {

UnitTests/Extensions/Test_TaskExtensions.cs

@@ -4,7 +4,7 @@
 
 using System;
 using System.Threading.Tasks;
-using Microsoft.Toolkit.Extensions;
+using Microsoft.Toolkit;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
 namespace UnitTests.Extensions