Proposed Changes

Generalize the variables in the CLookUpTable class for use in general look-up cases (not only progress variable-enthalpy).
Add dimension to CLookUpTable class to allow for quasi-3D interpolation (linear interpolation between two trapezoidal maps stacked in the third dimension).

I added a unit test as a test case with the quasi-3D table to show the correct use of syntax for 3D look-up operations.

Related Work

Can be used in feature_multilayer_perceptron in the CDataDrivenFluid fluid model for look-up operations.

PR Checklist

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• I am submitting my contribution to the develop branch.
• My contribution generates no new compiler warnings (try with --warnlevel=3 when using meson).
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• I have added a test case that demonstrates my contribution, if necessary.
• I have updated appropriate documentation (Tutorials, Docs Page, config_template.cpp), if necessary.