start of plugin support?

project_manager.py

@@ -15,6 +15,7 @@ import copy
 import pickle
 import concurrent
 import configparser
+import concurrent.futures
 from pathlib import Path, PurePosixPath
 from typing import TYPE_CHECKING, Any, List, Optional, Union
 
@@ -719,7 +720,7 @@ def _get_bids_demographics(snirf_path: str) -> dict[str, str]:
         return {}
 
     def _row_to_dict(row: pd.Series) -> dict[str, str]:
-        result = {}
+        result: dict[str, str] = {}
         for field in fields:
             if field not in row:
                 continue