ssims_wrapper: Wrapper for getting just summarized sims
In diazrenata/rwar: RedWing Analyses in R

For drake to avoid saving all the sims

ssims_wrapper(
  dat,
  simtype = "actual",
  initial_isd_seed_gmm = 1989,
  n_isd_draws = 10,
  ndraws = 100,
  initial_draw_seed = 1989
)

`dat`	matss
`simtype`	character
`initial_isd_seed_gmm`	passed to construct_sampling_gmm. seed used to start constructing the isds that are used to fit the gmm.
`n_isd_draws`	default 10
`ndraws`	default 100 but try fewer?
`initial_draw_seed`	seed used to draw 4 seeds which are then used to draw the different time period individuals.