Update to Work with Eigen 5.0.0

[EricaCMitchell]

Description

Eigen 5.0.0 changes where version is located. Needs to find version header for Eigen 5.x.x and Eigen 3.x.x. Same change as Libint PR 395.

Details

• Changes FindEigen3.cmake to try finding version for Eigen 5.x.x in new file Eigen/Version or try finding version for Eigen 3.x.x in old location Eigen/src/Core/util/Macros.h
• Introduces macro EIGEN_HAS_CXX17, which is set if EIGEN_MAJOR_VERSION > 4
• Checks range and matrix dimensions before inheritance in EigenSparseTile
• Check if data is nullptr after inheritance in TensorInterface

[EricaCMitchell]

Eigen3 5.x.x makes a change in its allocation if size == 0 (libeigen L217) compared to Eigen3 4.x.x.

For an empty TiledRange1, this results in a nullptr being returned instead of the previous static_cast<pointer>(std::malloc(0)), which screws up the data_ in tensor.h.