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/framework-bundle/Tests/DependencyInjection/Fixtures/php/assets.php

@@ -0,0 +1,32 @@
+<?php
+
+$container->loadFromExtension('framework', [
+    'assets' => [
+        'version' => 'SomeVersionScheme',
+        'base_urls' => 'http://cdn.example.com',
+        'version_format' => '%%s?version=%%s',
+        'packages' => [
+            'images_path' => [
+                'base_path' => '/foo',
+            ],
+            'images' => [
+                'version' => '1.0.0',
+                'base_urls' => ['http://images1.example.com', 'http://images2.example.com'],
+            ],
+            'foo' => [
+                'version' => '1.0.0',
+                'version_format' => '%%s-%%s',
+            ],
+            'bar' => [
+                'base_urls' => ['https://bar2.example.com'],
+            ],
+            'bar_version_strategy' => [
+                'base_urls' => ['https://bar2.example.com'],
+                'version_strategy' => 'assets.custom_version_strategy',
+            ],
+            'json_manifest_strategy' => [
+                'json_manifest_path' => '/path/to/manifest.json',
+            ],
+        ],
+    ],
+]);