Feature Request : add support to list-column

[cregouby]

Hello,

Since the its introduction in dlpyr in 2015, list columns becomes more and more widely used and popular within the tidyverse. It would be very usefull to have naniar to cover their missingness as well.

ReprEx :

library(dplyr, warn.conflicts = F)
library(naniar)
star_1 <- starwars %>% select(vehicles, starships) %>%  sample_n(6)
head(star_1)
#> # A tibble: 6 x 2
#>   vehicles  starships
#>   <list>    <list>   
#> 1 <chr [0]> <chr [0]>
#> 2 <chr [0]> <chr [0]>
#> 3 <chr [2]> <chr [2]>
#> 4 <chr [0]> <chr [0]>
#> 5 <chr [0]> <chr [0]>
#> 6 <chr [0]> <chr [0]>
any_miss(star_1)
#> [1] FALSE
nabular(star_1) %>% select(matches("_NA"))
#> # A tibble: 6 x 2
#>   vehicles_NA starships_NA
#>   <fct>       <fct>       
#> 1 !NA         !NA         
#> 2 !NA         !NA         
#> 3 !NA         !NA         
#> 4 !NA         !NA         
#> 5 !NA         !NA         
#> 6 !NA         !NA
vis_miss(star_1)

Expected output

any_miss(star_1)
#> [1] TRUE
nabular(star_1) %>% select(matches("_NA"))
#> # A tibble: 6 x 2
#>   vehicles_NA starships_NA
#>   <fct>       <fct>       
#> 1 NA          NA          
#> 2 NA          NA          
#> 3 !NA         !NA         
#> 4 NA          NA          
#> 5 NA          NA          
#> 6 NA          NA    
vis_miss(star_1)