Allows to configure directory and filename formats for documents stored in paperless

Default configuration is as before (incrementing numbers), but additional fields can be added at will

src/documents/consumer.py

@@ -234,6 +234,9 @@ class Consumer:
         self._write(document, doc, document.source_path)
         self._write(document, thumbnail, document.thumbnail_path)
 
+        document.set_filename(document.source_filename)
+        document.save()
+
         self.log("info", "Completed")
 
         return document