feat: check project is trainable before build

[tmpbeing]

Also fix an issue with translating a model configuration payload into ModelConfiguration object

[codecov]

Codecov Report

Attention: Patch coverage is 79.16667% with 5 lines in your changes missing coverage. Please review.

Project coverage is 85.60%. Comparing base (bd2b409) to head (180f159).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/ansys/simai/core/data/models.py	71.42%	2 Missing ⚠️
src/ansys/simai/core/data/projects.py	66.66%	2 Missing ⚠️
src/ansys/simai/core/data/model_configuration.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #113      +/-   ##
==========================================
+ Coverage   85.48%   85.60%   +0.11%     
==========================================
  Files          44       44              
  Lines        2639     2681      +42     
==========================================
+ Hits         2256     2295      +39     
- Misses        383      386       +3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[awoimbee]

Looks good, but whyy da property

[awoimbee]

thanks !