Add Gaussian Process Regression Binding Model

[jbreue16]

This PR adds a Gaussian Process Regression Binding Model
Python scripts for debug settings and tests are in cadet/CADET-Verification#105

todo

• implement base functionality
• remove mkl lib and use eigen instead
• remove repeated allocations
• follow-ups are tracked in Add data driven binding models #588 : add multi-component functionality, AD
• Add Gaussian Process Regression binding tests CADET-Verification#105
• reference test
• documentation

[jbreue16]

test_GPR_Shallow_RBF_15.zip

@hassanjazib the code seems faulty. I've fixed some function signatures and the code compiles, but computing the attached test_GPR_Shallow_RBF_15.h5 takes forever, there must be something wrong.

[codecov]

Codecov Report

❌ Patch coverage is 80.10471% with 38 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/libcadet/model/binding/GPR_Class.h	80.00%	36 Missing and 2 partials ⚠️

Files with missing lines	Coverage Δ
src/libcadet/BindingModelFactory.cpp	82.60% <100.00%> (-1.49%)	⬇️
src/libcadet/model/binding/GPR_Class.h	80.00% <80.00%> (ø)

... and 97 files with indirect coverage changes

[jbreue16]

@hassanjazib I think the code is fixed, comparing to the references you sent me: