N°2435.1 Portal: Split portal composer.json in 2

- Autoloader for portal files in the itop-portal-base module
- Dependencies moved to root composer.json
- Add autoloader for /core and /application content

lib/symfony/routing/Tests/Fixtures/php_dsl_sub.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Symfony\Component\Routing\Loader\Configurator;
+
+return function (RoutingConfigurator $routes) {
+    $add = $routes->collection('c_')
+        ->prefix('pub');
+
+    $add('bar', '/bar');
+
+    $add->collection('pub_')
+        ->host('host')
+        ->add('buz', 'buz');
+};