This function is useful if your data renders differently depending on the available width.
In this case, implement the pillar_shaft() method for your class to return a subclass of "pillar_shaft"
and have the format() method for this subclass call new_ornament().
See the implementation of pillar_shaft.numeric() and format.pillar_shaft_decimal() for an example.
Examples
new_ornament(c("abc", "de"), align = "right")
#> <pillar_ornament>
#> abc
#> de