add CI + regression tests for conversions

[satra]

we should add samples and tests for conversions. it would be good to have some public samples to use in case the linc data remains embargoed. perhaps we could ask each lab for some small samples for testing.

[kabilar]

+1 We should make sure that when creating a dataset the metadata match in the OME-Zarr sidecar json file and .zattrs file.

cc @jingjingwu1225