build: optional parquet support

utils/flat_user_detail.py

@@ -26,7 +26,8 @@ def calculate_dxrating(music: dict):
     try:
         return music | {"dxRating": dx_rating(Decimal(level.pop()["difficulty"]), ach)}
     except IndexError as _:
-        logger.warning(f"unknown level: {music_id} - {level_id}", file=stderr)
+        if level_id != 10:
+            logger.warning(f"unknown level: {music_id} - {level_id}", file=stderr)
         return music | {"dxRating": 0}