[FEAT] Plain nifti <-> zarr converter#48
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Requires #46 to be merged first.
This PR implements a first set of "plain" format converters. Plain converters are not modality specific. Instead, they aim to convert files between file formats while attempting to preserve the data and metadata as much as possible (same data type, same axes, same spatial metadata, ...).
This PR includes a converter between nifti and [{OME|NIfTI}-]Zarr. It calls the
nifti-zarrlibrary under the hood, but also allows remote lincbrain data to be accessed, with proper authentication.For now, authentication is only used if a path of the form
dandi://...is used. I could also detect links of the formneuroglancer.lincbrain.org(as is the case in ngtools), but do not yet.It would be useful to add converters for [OME-]TIFF next. We could also quite straighforwardly implement a JP2->Zarr converter by adapting the single-slice DF converter. However, I'll wait for the zarr3 refactoring to be finished and merged before working on these.