Refactor backend for getting signed url

src/Bundle/ChillDocStoreBundle/AsyncUpload/TempUrlGeneratorInterface.php

@@ -16,7 +16,8 @@ interface TempUrlGeneratorInterface
     public function generatePost(
         ?int $expire_delay = null,
         ?int $submit_delay = null,
-        int $max_file_count = 1
+        int $max_file_count = 1,
+        ?string $object_name = null,
     ): SignedUrlPost;
 
     public function generate(string $method, string $object_name, ?int $expire_delay = null): SignedUrl;