add php 8.1 compability, remove console command

src/Node/Node.php

@@ -5,7 +5,7 @@
  * Date: 06.04.16
  * Time: 13:23
  */
-namespace Madkom\NginxConfigurator\Node;
+namespace Envoyr\NginxConfigurator\Node;
 
 use Countable;
 use IteratorAggregate;