[do not merge] benchmarks + tests for phased codecpipeline#3891

d-v-b wants to merge 8 commits intozarr-developers:mainzarr-developers/zarr-python:mainfrom

d-v-b:perf/prepared-write-v2-benchd-v-b/zarr-python:perf/prepared-write-v2-benchCopy head branch name to clipboard