add optional confing handle

Author: jbtule

ManyConsole.CommandLineUtils/ConsoleCommandDispatcher.cs

@@ -42,10 +42,10 @@ public static IEnumerable<ConsoleCommand> FindCommandsInAssembly(Assembly assemb
 #endif
         }
 
-        public static int DispatchCommand(IEnumerable<ConsoleCommand> commands, string[] arguments, TextWriter consoleOut)
+        public static int DispatchCommand(IEnumerable<ConsoleCommand> commands, string[] arguments, TextWriter consoleOut, Action<CommandLineApplication> config = null)
         {
             var app = new CommandLineApplication();
-           
+            
             app.Out = consoleOut;
 
             var assemblyName =Assembly.GetEntryAssembly()?.GetName();
@@ -55,6 +55,8 @@ public static int DispatchCommand(IEnumerable<ConsoleCommand> commands, string[]
 
             app.HelpOption("-?|-h|--help");
 
+            config?.Invoke(app);
+
             app.OnExecute(() =>
             {
                 app.ShowHelp();