Add new CUTEst routines for the John function about pycutest HOT 2 OPEN

For now I will prioritise (all for constrained problems):

• cdhj: evaluate the dense Hessian of the (Fritz) John function
• cshj: evaluate the sparse Hessian of the (Fritz) John function
• chjprod: product of Hessian of the (Fritz) John function with a vector
• cohprods: sparse product of (objective) Hessian with a vector

as we need these for some of our research.

from pycutest.

Might also be good to support the following existing CUTEst routines:

• ufn: evaluate objective function
• cifn: evaluate objective function or constraint function
• cdhc: evaluate the Hessian of the constraint part of the Lagrangian
• chcprod: product of Hessian of the constraint part of the Lagrangian with a vector
• cchprods: products of Hessians of the constraint with a vector
• cshc: evaluate the Hessian of the constraint part of the Lagrangian (sparse)

These were either not used or not in CUTEr (the precursor to CUTEst).

from pycutest.