Use profiler to identify which lines of Python in Zarr-Python take longest

[JackKelly]

Comment copy-and-pasted from @MSanKeys963's comment here:

---

List of benchmarking tool as shared in today's meeting by @jakirkham:

• Py-Spy - https://github.com/benfred/py-spy
• Scalene - CPU, GPU, memory - https://github.com/plasma-umass/scalene
• Memray - memory - https://github.com/conda-forge/memray-feedstock
• Memory_profiler - memory - https://github.com/pythonprofilers/memory_profiler
• NERSC’s timemory (w/GPU support) - https://github.com/NERSC/timemory
• Vmprof - https://github.com/vmprof/vmprof-python
• Pyinstrument - https://pyinstrument.readthedocs.io/
• Filprofiler (memory) - https://github.com/conda-forge/filprofiler-feedstock
• Austin - CPU, memory - https://github.com/P403n1x87/austin
• Pyperf - eBPF based sampling profiler
  • https://pyperf.readthedocs.io/en/latest/index.html
  • https://github.com/psf/pyperf
• Ecosystem around pyperf:
  • Air Speed Velocity (ASV) - https://asv.readthedocs.io/en/v0.6.1/
  • Pytest-benchmark - https://github.com/ionelmc/pytest-benchmark/