Add MILP solver backends for HiGHS via highspy #33919
Description
HiGHS is developing its own Python interface in https://github.com/ERGO-Code/HiGHS/tree/master/src/interfaces/highspy (using pybind11); tableau data access methods yet to be done
Component: linear programming
Issue created by migration from https://trac.sagemath.org/ticket/33919