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
# Conflicts: # qim3d/io/convert.py # qim3d/utils/cli.py
