Support administrator handling for ShellRun api function

Author: Jack251970

Flow.Launcher.Plugin/Interfaces/IPublicAPI.cs

@@ -42,6 +42,9 @@ public interface IPublicAPI
         /// <summary>
         /// Run a shell command
         /// </summary>
+        /// <remarks>
+        /// It can help to start a de-elevated process and show user account control dialog when Flow is running as administrator.
+        /// </remarks>
         /// <param name="cmd">The command or program to run</param>
         /// <param name="filename">the shell type to run, e.g. powershell.exe</param>
         /// <exception cref="FileNotFoundException">Thrown when unable to find the file specified in the command </exception>

Flow.Launcher/PublicAPIInstance.cs

@@ -158,8 +158,7 @@ public void ShellRun(string cmd, string filename = "cmd.exe")
         {
             var args = filename == "cmd.exe" ? $"/C {cmd}" : $"{cmd}";
 
-            var startInfo = ShellCommand.SetProcessStartInfo(filename, arguments: args, createNoWindow: true);
-            ShellCommand.Execute(startInfo);
+            StartProcess(filename, arguments: args, createNoWindow: true);
         }
 
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Usage", "VSTHRD100:Avoid async void methods", Justification = "<Pending>")]