Add option to run as administrator for Shell plugin

Wox.Plugin/SharedCommands/ShellCommand.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Wox.Plugin.SharedCommands
+{
+    public static class ShellCommand
+    {
+        public static ProcessStartInfo SetCMDRunAsAdministrator(this string fullPath, string parentDirectory)
+        {
+            var info = new ProcessStartInfo
+            {
+                FileName = fullPath,
+                WorkingDirectory = parentDirectory,
+                Verb = "runas"
+            };
+
+            return info;
+        }
+    }
+}