Auto start support

App.xaml.cs

@@ -1,4 +1,7 @@
-using System.Windows;
+using FloatingStatusWindowLibrary;
+using ProcessCpuUsageStatusWindow.Properties;
+using System.Diagnostics;
+using System.Windows;
 
 namespace ProcessCpuUsageStatusWindow
 {
@@ -10,6 +13,14 @@ namespace ProcessCpuUsageStatusWindow
         {
             base.OnStartup(e);
 
+            StartManager.ManageAutoStart = true;
+            StartManager.AutoStartEnabled = !Debugger.IsAttached && Settings.Default.AutoStart;
+            StartManager.AutoStartChanged += (value =>
+            {
+                Settings.Default.AutoStart = value;
+                Settings.Default.Save();
+            });
+
             _windowSource = new WindowSource();
         }