Collect all feasible solutions

[ivborissov]

Hi,

is it possible to add support for optimizer_attribute to collect all feasible solutions: set_optimizer_attribute(model, "constraints/countsols/collect", 1)

The question appeared on discourse and it seems SCIP is the only free MIP solver, which supports it https://discourse.julialang.org/t/right-solver-for-jump-to-find-every-solution-of-a-linear-system-of-equations-with-integer-solutions/44709 https://www.scipopt.org/doc/html/COUNTER.php