init demo

src/Shared/HandyControlDemo_Shared/UserControl/Controls/SideMenuDemoCtl.xaml

@@ -0,0 +1,11 @@
+<UserControl x:Class="HandyControlDemo.UserControl.SideMenuDemoCtl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d"
+             d:DesignHeight="300"
+             d:DesignWidth="400">
+
+    
+</UserControl>

src/Shared/HandyControlDemo_Shared/UserControl/Controls/SideMenuDemoCtl.xaml.cs

@@ -0,0 +1,10 @@
+namespace HandyControlDemo.UserControl
+{
+    public partial class SideMenuDemoCtl
+    {
+        public SideMenuDemoCtl()
+        {
+            InitializeComponent();
+        }
+    }
+}