Conv zarr nifti

Created conversion of zarr to nii

Only issue is that zarr to nii requires the file to be loaded into memory

https://www.notion.so/qim-dtu/Convert-Zarr-to-nii-folder-7b8db2b3daea45d8841cd0ebc99d647a?pvs=4

requested review from @fima

assigned to @s204159

added 11 commits

• ad886118...d2408c65 - 10 commits from branch main
• c0d6485a - Merge branch 'main' into 'conv_zarr_nifti'

Compare with previous version

approved this merge request

mentioned in commit 26c0cb24

merged