Feature
- Added `print_distribution_sessions_bids_dataset` in `utils_bids_dcm_dataset.py`
- Added `dcm2nii_sitk` in `utils_nifti_dicom.py`
- Added `binarize_array` in `utils_numpy.py`
- Added `contains_only_digits`, `load_json_file_as_dict`, `get_filename_without_extensions` and `get_filename_with_extensions` in `utils_strings.py`
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