full upload so not to lose anything important

tools/util.py

@@ -14,6 +14,12 @@ def load_dataset(
     return Dataset.from_file(bag_file_path, topic=pointcloud_topic)
 
 
+def save_dataset(dataset: Dataset, output_file_path: Path):
+    if not output_file_path.is_dir():
+        raise ArgumentTypeError(f"{output_file_path} has to be a valid folder!")
+    dataset.to_file(output_file_path)
+
+
 def calculate_average_frame_rate(dataset: Dataset):
     timestamps = dataset.timestamps
     time_deltas = [