HED extractor

[yarikoptic]

Many openneuro datasets would have HED tags and such would have HEDVersion in dataset_description.json

CLI URL (remodeling tools interface)

• https://www.hed-resources.org/en/latest/HedRemodelingQuickstart.html
• https://www.hed-resources.org/en/latest/HedRemodelingTools.html

Example of commands for NEMAR:

• https://github.com/sccn/NEMAR-pipeline/blob/main/HED/summary/run_hed_summary.py
• Which uses this json template: https://github.com/sccn/NEMAR-pipeline/blob/main/HED/summary/hed_summary_cmd.json