Parse zarr v2 (#822)

* Implement Zarr V2 to V3 metadata conversion with fill value handling

* Enhance parse_manifest_index to support V2 and V3 chunk key parsing

* Refactor parse_manifest_index to improve regex pattern matching and error handling

* Enhance get_chunk_mapping_prefix to support V2 and V3 chunk path parsing

* Enhance build_chunk_manifest to calculate chunk grid shape for inline V2 data

* Enhance test_virtual_dataset_zarr to handle dimension name checks for V2 and V3 formats

* Remove redundant check for V2 format in get_metadata function

* cleaning up

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* revert store

* linting

* fixing mypy typing

* removing redundant code, linting

* refactor zarr parsing to use strategy pattern for extensibility and maintainability, linted

* refactor test, add tests to improve coverage of zarr parsing (97%), linted

* adding v2 parsing as new feature

* updating ZarrParser documentation

* converting protocol to ABC

* adding tests for sparse files being filled with default fill values

* fix zeros list

* adding comment about chunk key discovery

* cleaning up a bit based on comments

* fixing issue with conflicting test assertions around v2 metadata attributes

* refactoring common bits of code

* raise error on shard detection for v3

* test that sharded v3 array raises error

* fixing mypy errors

---------

Co-authored-by: neilSchroeder <neil.raymond.schroeder@gmail.clom>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

docs/releases.md

@@ -4,6 +4,10 @@
 
 ### New Features
 
+- `ZarrParser` now handles Zarr V2 and V3 array parsing.
+  ([#565](https://github.com/zarr-developers/VirtualiZarr/pull/822)).
+  By [Neil Schroeder](https://github.com/neilSchroeder)
+
 ### Breaking changes
 
 ### Bug fixes