Add custom context menu setting for findfile plugin and improve the search speed.

Plugins/Wox.Plugin.FindFile/setting.xaml.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace Wox.Plugin.FindFile
+{
+    public partial class Setting : UserControl
+    {
+        public Setting()
+        {
+            InitializeComponent();
+            menuGrid.ItemsSource = FindFileContextMenuStorage.Instance.ContextMenus;
+            menuGrid.CurrentCellChanged += menuGrid_CurrentCellChanged;
+        }
+
+        void menuGrid_CurrentCellChanged(object sender, EventArgs e)
+        {
+            FindFileContextMenuStorage.Instance.Save();
+        }
+    }
+}