Fix errors

Switch_Toolbox_Library/Interfaces/IArchiveQuickAccess.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Toolbox.Library
+{
+    public interface IArchiveQuickAccess
+    {
+        /// <summary>
+        /// Determines the category. The keys are the extension, value is category.
+        /// </summary>
+        Dictionary<string, string> CategoryLookup { get; }
+    }
+}