implemented 'LEAFPACK' archives and LFG images.

ArcFormats/Leaf/WidgetLEAF.xaml.cs

@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Controls;
+
+namespace GameRes.Formats.GUI
+{
+    /// <summary>
+    /// Interaction logic for WidgetLEAF.xaml
+    /// </summary>
+    public partial class WidgetLEAF : StackPanel
+    {
+        public WidgetLEAF (IEnumerable<string> titles)
+        {
+            this.InitializeComponent();
+            this.DataContext = titles.OrderBy (x => x);
+        }
+    }
+}