NEW: integrity check for sct_dmri_separate_b0_and_dwi
NEW: integrity check for sct_dmri_separate_b0_and_dwi

Former-commit-id: 65b9f18d86738a68381c26c007a4b70b8adb90b8
Former-commit-id: 98f7a5bad6c19276551bb7fc81122eeba895d583
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox