Feature: [docgen] create a service to generate a document from a template

src/Bundle/ChillDocGeneratorBundle/Service/Generator/GeneratorException.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Chill\DocGeneratorBundle\Service\Generator;
+
+class GeneratorException extends \RuntimeException
+{
+    /**
+     * @var list<string>
+     */
+    private array $errors;
+
+    public function __construct(array $errors = [], \Throwable $previous = null)
+    {
+        $this->errors = $errors;
+        parent::__construct("Could not generate the document", 15252,
+            $previous);
+    }
+}