N°6934 - Symfony 6.4 - upgrade Symfony bundles to 6.4 (#580)

* Update Symfony lib to version ~6.4.0
* Update code missing return type
* Add an iTop general configuration entry to store application secret (Symfony mandatory parameter)
* Use dependency injection in ExceptionListener & UserProvider classes

lib/symfony/config/Loader/Loader.php

@@ -28,16 +28,13 @@ abstract class Loader implements LoaderInterface
         $this->env = $env;
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function getResolver()
+    public function getResolver(): LoaderResolverInterface
     {
         return $this->resolver;
     }
 
     /**
-     * {@inheritdoc}
+     * @return void
      */
     public function setResolver(LoaderResolverInterface $resolver)
     {
@@ -47,12 +44,9 @@ abstract class Loader implements LoaderInterface
     /**
      * Imports a resource.
      *
-     * @param mixed       $resource A resource
-     * @param string|null $type     The resource type or null if unknown
-     *
      * @return mixed
      */
-    public function import($resource, string $type = null)
+    public function import(mixed $resource, string $type = null)
     {
         return $this->resolve($resource, $type)->load($resource, $type);
     }
@@ -60,14 +54,9 @@ abstract class Loader implements LoaderInterface
     /**
      * Finds a loader able to load an imported resource.
      *
-     * @param mixed       $resource A resource
-     * @param string|null $type     The resource type or null if unknown
-     *
-     * @return LoaderInterface
-     *
      * @throws LoaderLoadException If no loader is found
      */
-    public function resolve($resource, string $type = null)
+    public function resolve(mixed $resource, string $type = null): LoaderInterface
     {
         if ($this->supports($resource, $type)) {
             return $this;