This improves also how the parent variable is found within the same store

This is a assumption of the distribute work function and necessary
because the domain decomposition must align with the chunking

multipole components

Patched the metadata import function and Merged remote-tracking branch 'origin/copy_metadata' into 6-zarr3-sharding

changed the order of imports in the worker as the numpy (built with different compiler) is causing unexpected behaviour if imported first