fixes for summary printout #375

[rozyczko]

• Added record_fit_results method to MultiFitter to allow recording of fit results produced externally, ensuring that attributes like chi2, reduced_chi, and the HTML summary reflect the latest fit state. Passing None clears the state.

• Refactored the _compute_goodness_of_fit method in Summary to read the reduced chi-square directly from the fitter, making the summary independent of underlying FitResults attribute naming and ensuring consistency.

• Fixed a typo in the HTML template and its usage, changing num_constriants to num_constraints for correct substitution in summaries.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (5e14e7f) to head (266f677).

Files with missing lines	Patch %	Lines
src/easyreflectometry/summary/summary.py	0.00%	7 Missing ⚠️
src/easyreflectometry/fitting.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           develop    #385   +/-   ##
=======================================
  Coverage     0.00%   0.00%           
=======================================
  Files           42      42           
  Lines         3573    3573           
=======================================
  Misses        3573    3573           

Flag	Coverage Δ
integration	0.00% <0.00%> (ø)
unittests	0.00% <0.00%> (ø)

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Files with missing lines	Coverage Δ
src/easyreflectometry/summary/html_templates.py	0.00% <ø> (ø)
src/easyreflectometry/fitting.py	0.00% <0.00%> (ø)
src/easyreflectometry/summary/summary.py	0.00% <0.00%> (ø)

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