MAINT: cost_options argument in smash.optimize_control_info() could be removed

[nghi-truyen]

The cost_options argument in smash.optimize_control_info() seems to be redundant. However, the one in smash.bayesian_optimize_control_info() is necessary to define both sg0 and sg1 parameters (depending on calibrated gauges).

Note: The two new methods will be added to smash taking exactly the same arguments of smash.optimize_control_info() and smash.bayesian_optimize_control_info() methods. These methods would enable users to retrieve the model object from a control vector solution.