Lasso & box selection in scattermapbox

[jackparmer]

It would be nice to expand the scattermapbox modebar to support lasso and box selection. Ideally, it would fire a plotly_selectedevent with the same data structure as cartesian plots.scattermapbox could be another maps option in addition to leaflet for R Shiny and linked view examples such as these.

https://cpsievert.github.io/plotly_book/linking-views-without-shiny.html#linking-with-other-htmlwidgets

http://cpsievert.github.io/pedestrians/tour-dendro/

[r1z1a]

Would be great too have the lasso and box select for Histogram and Bar Chart as well.