Feature request geom_sina()

[concimuscb]

geom_sina is a great compromise between the explainability of a scatter plot with a discrete axis and the aesthetics of a violin chart. It provides a much more orderly look than geom_jitter for discrete axis.

https://ggforce.data-imaginist.com/reference/geom_sina.html

Could be an interesting addition to the package.

[alshan]

This is interesting plot, thanks! A similar request here #1023 .