Add shift to transforms for ome.zarr

We need to add a pixel shift to the scale-level transforms for ome.zarr to avoid small jumps in between the resolution layers.
See for example `https://s3.embl.de/i2k-2020/platy-raw.ome.zarr` in bdv:

https://user-images.githubusercontent.com/4263537/159702767-e93fe2fb-15d4-4916-8ebc-9f73349513fd.mp4