REF: adapts the function read_info_label from sct_extract_metric to read the new keywords defining sections in file info_label.txt
REF: adapts the function read_info_label from sct_extract_metric to read the new keywords defining sections in file info_label.txt

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox