MultithreadCorner/Hydra: Release candidate for Hydra v4.0.1

Hydra 4.0.1

Hydra is now compatible with CUDA 12.2 or higher and compliant with C++17 and C++20.

In this release:

1. Dependencies updates:

• Thrust v2.2.0
• CUB v2.2.0
• Eigen 3.4.0
• Boost.Math 1.83.0 (NEW)

1. Dependencies functions and classes are now available under corresponding subnamespaces. For example: hydra::thrust, hydra::boost::math and hydra::Eigen;
2. New spline algorithms for interpolation up to four dimensions:

Free functions:

```cpp

    hydra::spline
    hydra::spline2D
    hydra::spline4D
    hydra::spline3D 
```

Including overloads for range-based contained and histograms with corresponding dimension. Header: hydra/Spline.h

1. New method Interpolate(...) for dense and sparse histograms up to four dimensions.

2. New functors:

   
       hydra::SplineFunctor
       hydra::Spline2DFunctor
       hydra::Spline4DFunctor
       hydra::Spline3DFunctor
   

   Defined in the headers: hydra/functions/SplineFunctor.h , hydra/functions/Spline2DFunctor.h hydra/functions/Spline3DFunctor.h hydra/functions/Spline4DFunctor.h.

3. New examples covering new functionality.

Bug fixes:

Many bug fixes across the tree.