highspy >=1.8.0 required but this is not checked

[yvanoers]

Since keyboard interrupt support was added for HiGHS:

pyomo/pyomo/contrib/appsi/solvers/highs.py

Line 250 in 03dcc22

self._solver_model.HandleKeyboardInterrupt = True

the minimum version of highspy required is 1.8.0.

This is not enforced or mentioned anywhere, so when this code is called using an earlier version, it fails with:

AttributeError: 'Highs' object has no attribute 'HandleKeyboardInterrupt'

Expected behavior:

A check on the highspy version and a message or exception if insufficient, much like the check for the Gurobi solver:

pyomo/pyomo/contrib/appsi/solvers/gurobi.py

Lines 54 to 56 in 03dcc22

	if gurobipy.GRB.VERSION_MAJOR < 7:
	Gurobi._available = Gurobi.Availability.BadVersion
	raise ImportError('The APPSI Gurobi interface requires gurobipy>=7.0.0')