[WIP] Add context menu support

samples/NotificationFlyoutSample/NotificationFlyoutSample.Host/Program.cs

@@ -1,4 +1,5 @@
-using System;
+using NotificationFlyout.Wpf.UI.Controls;
+using System;
 
 namespace NotificationFlyoutSample.Host
 {
@@ -10,7 +11,10 @@ namespace NotificationFlyoutSample.Host
             using (new NotificationFlyoutSample.App())
             {
                 var app = new App();
-                new SampleNotificationFlyout();
+                new NotificationFlyoutApplication
+                {
+                    Flyout = new Shell()
+                };
                 app.Run();
             }
         }

samples/NotificationFlyoutSample/NotificationFlyoutSample.Host/SampleNotificationFlyout.xaml

@@ -1,9 +0,0 @@
-<NotificationFlyout
-    x:Class="NotificationFlyoutSample.Host.SampleNotificationFlyout"
-    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:uwp="clr-namespace:NotificationFlyoutSample;assembly=NotificationFlyoutSample"
-    IconSource="/Assets/Icon.ico"
-    LightIconSource="/Assets/Icon-Light.ico">
-    <uwp:Shell />
-</NotificationFlyout>

samples/NotificationFlyoutSample/NotificationFlyoutSample.Host/SampleNotificationFlyout.xaml.cs

@@ -1,10 +0,0 @@
-namespace NotificationFlyoutSample.Host
-{
-    public partial class SampleNotificationFlyout
-    {
-        public SampleNotificationFlyout()
-        {
-            InitializeComponent();
-        }
-    }
-}