implemented 'non color' ARC archives.

ArcFormats/NonColor/WidgetNCARC.xaml.cs

@@ -0,0 +1,18 @@
+using System.Windows.Controls;
+using System.Linq;
+using GameRes.Formats.NonColor;
+
+namespace GameRes.Formats.GUI
+{
+    /// <summary>
+    /// Interaction logic for WidgetNCARC.xaml
+    /// </summary>
+    public partial class WidgetNCARC : StackPanel
+    {
+        public WidgetNCARC()
+        {
+            InitializeComponent();
+            Scheme.ItemsSource = DatOpener.KnownSchemes.OrderBy (x => x.Key);
+        }
+    }
+}