Clean up HYDRAD model interface

[wtbarnes]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 32.00000% with 17 lines in your changes are missing coverage. Please review.

Project coverage is 43.09%. Comparing base (29e4086) to head (b011257).

Files	Patch %	Lines
synthesizAR/interfaces/hydrad/hydrad.py	11.11%	16 Missing ⚠️
synthesizAR/models/scaling_laws.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #89      +/-   ##
==========================================
+ Coverage   43.04%   43.09%   +0.05%     
==========================================
  Files          34       34              
  Lines        1956     1949       -7     
==========================================
- Hits          842      840       -2     
+ Misses       1114     1109       -5     

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