Deprecate N5Store

[jhamman]

closed #2085

TODO:

• Add unit tests and/or doctests in docstrings
• Add docstrings and API docs for any new/modified user-facing classes and functions
• New/modified features documented in docs/tutorial.rst
• Changes documented in docs/release.rst
• GitHub Actions have all passed
• Test coverage is 100% (Codecov passes)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.98%. Comparing base (d1b92b5) to head (27b800e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2103   +/-   ##
=======================================
  Coverage   99.98%   99.98%           
=======================================
  Files          38       38           
  Lines       14714    14718    +4     
=======================================
+ Hits        14712    14716    +4     
  Misses          2        2           

Files	Coverage Δ
zarr/n5.py	100.00% <100.00%> (ø)

[d-v-b]

We should get the same warning in for N5FSStore, happy to do that myself as needed

[jhamman]

We should get the same warning in for N5FSStore, happy to do that myself as needed

I did it :)