Implement Feasibility Cuts for PlasmoBenders

[dlcole3]

Currently, PlasmoBenders does not handle infeasible solutions very well. There is an option to add slacks to the linking constraints, but in practice, they do not have the greatest performance. It would be helpful to try implementing feasibility cuts as an alternative

[odow]

Linking to this section of the JuMP docs: https://jump.dev/JuMP.jl/stable/tutorials/algorithms/benders_decomposition/#Feasibility-cuts

The JuMP trick is to recognize that you can use dual_objective_value(model) when there is an infeasibility certificate for the intercept.