Add PHPStan configuration for Symfony4 tests

- Created a new phpstan.neon file in the Symfony4 tests directory.
- Configured paths and excluded Symfony3 directory.
- Added bootstrap files for autoloading.
- Set dynamic constant names and adjusted reporting settings.
- Established PHPStan level to 6 for stricter analysis.

modules/empikmarketplace/classes/EmpikAction.php

@@ -39,11 +39,11 @@ class EmpikAction extends ObjectModel
             ],
             'id_import' => [
                 'type' => self::TYPE_INT,
-                'validate' => 'isCleanHtml',
+                'validate' => 'isUnsignedInt',
             ],
             'import_count' => [
                 'type' => self::TYPE_INT,
-                'validate' => 'isCleanHtml',
+                'validate' => 'isUnsignedInt',
             ],
             'date_start' => [
                 'type' => self::TYPE_DATE,
@@ -57,4 +57,4 @@ class EmpikAction extends ObjectModel
             ],
         ],
     ];
-}
+}