Allow subselection of state variables for steady-state simulations

[dweindl]

Allow subselection of state variables for convergence check during steady-state simulations via Model.set_steadystate_mask([1, 0, ..., 1]) (positve value: check; non-positive: don't check).

Closes #2368

[codecov]

Codecov Report

Attention: Patch coverage is 82.35294% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 77.62%. Comparing base (e8493cf) to head (137af9d).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2387   +/-   ##
========================================
  Coverage    77.61%   77.62%           
========================================
  Files          324      324           
  Lines        20895    20925   +30     
  Branches      1458     1464    +6     
========================================
+ Hits         16218    16243   +25     
- Misses        4674     4679    +5     
  Partials         3        3           

Flag	Coverage Δ
cpp	73.40% <82.35%> (+0.01%)	⬆️
cpp_python	34.16% <17.64%> (-0.04%)	⬇️
petab	36.74% <21.21%> (-0.04%)	⬇️
python	72.16% <70.58%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
include/amici/model.h	78.26% <100.00%> (+4.57%)	⬆️
include/amici/serialization.h	96.80% <100.00%> (+0.01%)	⬆️
include/amici/steadystateproblem.h	100.00% <ø> (ø)
include/amici/vector.h	83.33% <ø> (ø)
python/sdist/amici/swig_wrappers.py	92.94% <ø> (ø)
src/steadystateproblem.cpp	83.92% <100.00%> (+0.36%)	⬆️
src/hdf5.cpp	89.60% <25.00%> (-0.39%)	⬇️
src/model.cpp	83.94% <75.00%> (-0.08%)	⬇️

... and 1 file with indirect coverage changes