added GUI widget for encrypted ASB scripts.

ArcFormats/AZSys/WidgetAZ.xaml.cs

@@ -0,0 +1,19 @@
+using System.Linq;
+using System.Windows;
+using System.Windows.Controls;
+using GameRes.Formats.AZSys;
+
+namespace GameRes.Formats.GUI
+{
+    /// <summary>
+    /// Interaction logic for WidgetAZ.xaml
+    /// </summary>
+    public partial class WidgetAZ : StackPanel
+    {
+        public WidgetAZ()
+        {
+            InitializeComponent();
+            Scheme.ItemsSource = ArcOpener.KnownKeys.Keys.OrderBy (x => x);
+        }
+    }
+}