Document StoreLike values in user guide

[K-Meech]

Closes #3303

Documents valid values of StoreLike in the user guide, and links to this common location from docstrings. This fixes inconsistencies with how StoreLike is described, see corresponding issue. This is based on the handling of StoreLike by zarr.storage._common.make_store.

To link from the docstrings, I had to enable the autoref plugin which is recommended in the mkdocstrings documentation. I added a unique markdown anchor for this section in the user guide #user-guide-store-like to ensure all links go to the correct location. Without this (using the auto-generated heading links alone), would mean that any other doc using a 'StoreLike' heading would break these links.

I added examples for all the different values except: dict[str, Buffer] and FSMap. Happy to add examples to this PR if people have suggestions.

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/user-guide/*.md
• Changes documented as a new file in changes/
• GitHub Actions have all passed
• Test coverage is 100% (Codecov passes)

[d-v-b]

thanks @K-Meech!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.21%. Comparing base (2d3d790) to head (9b97467).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3480      +/-   ##
==========================================
+ Coverage   61.18%   61.21%   +0.03%     
==========================================
  Files          84       84              
  Lines        9923     9923              
==========================================
+ Hits         6071     6074       +3     
+ Misses       3852     3849       -3     

Files with missing lines	Coverage Δ
src/zarr/api/asynchronous.py	72.20% <ø> (ø)
src/zarr/api/synchronous.py	36.61% <ø> (ø)
src/zarr/core/array.py	68.62% <ø> (ø)
src/zarr/core/group.py	70.24% <ø> (ø)
src/zarr/storage/_common.py	67.00% <ø> (ø)

... and 1 file with indirect coverage changes

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