Update Debugbar to include autoshow setting (#1393)

I think that's a valid point to include, due to the fact that in a lot of software with the autoshow set to true it's impossible to use the debugbar.
I'm in Laravel Nova right now, every time a notification ajax gets sent, the request I'm debugging gets removed by that setting.
I've tried to add a middleware to enable that setting, but it breaks other things in beetween.
Right now this it's the most polished solution.
Let me know if it's ok!
Thanks!

src/LaravelDebugbar.php

@@ -897,9 +897,12 @@ function (&$item) {
      */
     public function injectDebugbar(Response $response)
     {
+        $config = $this->app['config'];
         $content = $response->getContent();
 
         $renderer = $this->getJavascriptRenderer();
+        $autoShow = $config->get('debugbar.ajax_handler_auto_show', true);
+        $renderer->setAjaxHandlerAutoShow($autoShow);
         if ($this->getStorage()) {
             $openHandlerUrl = route('debugbar.openhandler');
             $renderer->setOpenHandlerUrl($openHandlerUrl);