Add system commands

WinAlfred/Commands/SystemCommand.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using WinAlfred.Plugin;
+
+namespace WinAlfred.Commands
+{
+    public class SystemCommand
+    {
+        public void Dispatch(Query query)
+        {
+            
+        }
+    }
+}