Add partial Zarr V3 consolidated metadata support

[LDeakin]

• Pending Added consolidated metadata to spec zarr-developers/zarr-specs#309
• Use consolidated metadata as intended when opening a Node to reduce requests
  • Next release? With some Node/Group API improvements
• Changelog
• Zarr V2 consolidated metadata support?

[codecov]

Codecov Report

Attention: Patch coverage is 91.42857% with 9 lines in your changes missing coverage. Please review.

Project coverage is 81.72%. Comparing base (cb436be) to head (55d572f).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
zarrs_metadata/src/v3/group.rs	88.88%	7 Missing ⚠️
zarrs/src/group.rs	92.30%	1 Missing ⚠️
zarrs/src/node.rs	96.55%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #55      +/-   ##
==========================================
+ Coverage   81.65%   81.72%   +0.06%     
==========================================
  Files         167      167              
  Lines       23765    23870     +105     
==========================================
+ Hits        19406    19507     +101     
- Misses       4359     4363       +4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.