Ab/allow squeeze for hdf parser

[abarciauskas-bgse]

What I did

This PR adds a squeeze boolean parameter to the HDFParser. When squeeze=True, any dimension with shape <=1 is dropped from the chunk manifest.

Acceptance criteria:

• Closes Feature: Squeeze singleton dimensions in HDFParser #971
• Tests added
• Tests passing
• No test coverage regression
• Full type hint coverage
• Changes are documented in docs/releases.md
• New functions/methods are listed in an appropriate *.md file under docs/api
• New functionality has documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.00%. Comparing base (e82ac27) to head (6dc9337).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #983      +/-   ##
==========================================
+ Coverage   89.35%   90.00%   +0.65%     
==========================================
  Files          33       33              
  Lines        2038     2071      +33     
==========================================
+ Hits         1821     1864      +43     
+ Misses        217      207      -10     

Files with missing lines	Coverage Δ
virtualizarr/parsers/hdf/hdf.py	95.97% <100.00%> (+0.38%)	⬆️

... and 5 files with indirect coverage changes

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[abarciauskas-bgse]

@maxrjones I used your notes for this so let me know if its what you had imagined the solution to be.