feat: add `get_save_idxs_and_saved_subsystem`#847

ChrisRackauckas merged 1 commit intoSciML:masterSciML/SciMLBase.jl:masterfrom

AayushSabharwal:as/get-save-idxsAayushSabharwal/SciMLBase.jl:as/get-save-idxsCopy head branch name to clipboard