as.kpilist function

[aghaynes]

Is your feature request related to a problem? Please describe.
function to convert from a normal list to a kpilist for occasions where map or lapply or something has been used.

Describe the solution you'd like

klist # some existing kpilist
k <- lapply(something, function(x){
    kpi(dat, x)
  }) %>% 
  as.kpilist()

klist <- c(klist, k)