does the following
- co-registration
- atlas registration
- transformation
- skullstripping in brats-space
- apply masking
- result: 4niftis, skullstripped brats-space -> save to path
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2915788/
pip install -e "git+https://github.com/neuronflow/BrainLes.git@main#egg=HD_BET&subdirectory=preprocessing/brainles_preprocessing/brain_extraction/HD_BET"