Implement method to return call required to build a plot

[ellessenne]

It would be useful to implement a (sort of) how method to return the ggplot call required to build plot types currently implemented within autoplot.

[ellessenne]

Using the !! operator from rlang may help here.

[ellessenne]

See also the expression() + eval() approach here: https://stackoverflow.com/questions/2764760/return-call-from-ggplot-object

[ellessenne]

See ggreverse.