Determine if the object is a valid ID
See also
to check multiple IDs, use are_ids
Examples
check_empty_beautier_folder()
# TRUE
is_id("anthus_aco")
#> [1] TRUE
is_id(3)
#> [1] TRUE
# FALSE
is_id(ape::rcoal(3))
#> [1] FALSE
is_id(NULL)
#> [1] FALSE
is_id(NA)
#> [1] FALSE
check_empty_beautier_folder()