Swig-ignore some unnecessary types

[dweindl]

and add Model.create_solver as a more pythonic alias to getSolver.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.98%. Comparing base (e366c5b) to head (08d7501).
⚠️ Report is 51 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2922      +/-   ##
==========================================
- Coverage   79.58%   78.98%   -0.61%     
==========================================
  Files         362      362              
  Lines       23103    23103              
  Branches     1587     1587              
==========================================
- Hits        18386    18247     -139     
- Misses       4706     4844     +138     
- Partials       11       12       +1     

Flag	Coverage Δ
cpp	74.90% <ø> (-0.04%)	⬇️
cpp_python	33.18% <ø> (-0.01%)	⬇️
petab	38.90% <ø> (ø)
python	73.76% <ø> (-0.04%)	⬇️
sbmlsuite-jax	?

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see 9 files with indirect coverage changes

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