Missing feature: `scale_colour_binned` and `scale_fill_binned`

[bhvieira]

As always, thanks for the amazing project!

I noticed a missing feature and thought it would be a good idea to report it here: support for binned scaled was added in https://github.com/tidyverse/ggplot2/pull/3096 and subsequently revamped. See https://github.com/tidyverse/ggplot2/blob/main/R/scale-colour.R

[has2k1]

This is in the plan after the next release.