First wall dataclass

[clmould]

Description

Checklist

I confirm that I have completed the following checks:

• My changes follow the PROCESS style guide
• I have justified any large differences in the regression tests caused by this pull request in the comments.
• I have added new tests where appropriate for the changes I have made.
• If I have had to change any existing unit or integration tests, I have justified this change in the pull request comments.
• If I have made documentation changes, I have checked they render correctly.
• I have added documentation for my change, if appropriate.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 76.92308% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.80%. Comparing base (62a4d95) to head (6c4714a).

Files with missing lines	Patch %	Lines
process/models/stellarator/stellarator.py	0.00%	6 Missing ⚠️
process/models/ife.py	85.71%	1 Missing ⚠️
process/models/stellarator/build.py	80.00%	1 Missing ⚠️
process/models/stellarator/divertor.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4226      +/-   ##
==========================================
+ Coverage   51.78%   51.80%   +0.02%     
==========================================
  Files         150      150              
  Lines       30285    30286       +1     
==========================================
+ Hits        15684    15691       +7     
+ Misses      14601    14595       -6     

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