feat: Define __all__ for Lua module exports (#667)

Author: baseplate-admin

src/backend/app/lua/__init__.py

@@ -36,4 +36,4 @@ def _load_lua_file(path: Path) -> LuaModule:
 json_update_uploaded_bytes_by_key: LuaModule
 rate_limit: LuaModule
 
-__all__: list[str]
+__all__ = ['json_remove_file_by_key','json_remove_upload_by_key','json_update_uploaded_bytes_by_key','rate_limit']