Consider merging with `ndevio`

[TimMonko]

Now that https://github.com/ndev-kit/ndevio lives in its own repo
AND napari_reader_function can be used to read in label images via ndevio
AND ndev-sampledata should depend on ndevio
AND pooch makes it easy to get versioned data off something like zenodo to keep the repo clean
AND this allows testing of the sampledata and ensuring that we don't break the reader function...

Consider combining with ndevio

Only disadvantage is slight integration of concerns, but I think it actually shows off how well a reader function can be used for a sample data function, and thats quite nice.