refactor: update source classes to use simplified App namespace

Author: nanoninja

web/app/src/Foo.php

@@ -1,21 +1,16 @@
 <?php
 
-/**
- * I belong to a file
- */
+declare(strict_types=1);
 
-namespace App\Acme;
+namespace App;
 
-/**
- * I belong to a class
- */
 class Foo
 {
     /**
      * Gets the name of the application.
      */
     public function getName()
     {
-        return 'Nginx PHP MySQL';
+        return 'Docker Nginx PHP MySQL';
     }
 }