Slow gr si ox nmc811

[malihass]

Description

Ability to include a slow version of the GrSiOx-NMC811 where the OCV are not exposed in BATMODS-lite.
Also did some small spelling cleanup and variable naming cleanup.

Type of change

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that improves speed/readability/etc.)
• Bug fix (non-breaking change which fixes an issue)
• Chore (any other clean up, maintenance, etc.)

Key checklist:

• No style issues: $ nox -s linter [-- format]
• Code is free of misspellings: $ nox -s codespell [-- write]
• All tests pass: $ nox -s tests

Further checks:

• The documentation builds: $ nox -s docs.
• Code is commented, particularly in hard-to-understand areas.
• Tests are added that prove fix is effective or that feature works.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 86.66667% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.45%. Comparing base (0845d96) to head (058d479).

Files with missing lines	Patch %	Lines
src/bmlite/materials/_graphite_SiOx.py	87.50%	3 Missing ⚠️
src/bmlite/materials/_nmc_811.py	87.50%	3 Missing ⚠️
src/bmlite/P2D/domains.py	80.00%	1 Missing ⚠️
src/bmlite/SPM/domains.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #27      +/-   ##
==========================================
- Coverage   91.59%   91.45%   -0.15%     
==========================================
  Files          31       31              
  Lines        2178     2234      +56     
==========================================
+ Hits         1995     2043      +48     
- Misses        183      191       +8     

Flag	Coverage Δ
unittests	91.45% <86.66%> (-0.15%)	⬇️

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