serenity-r/dndselectr: Implements a drag-and-drop Shiny select input

Implements a drag-and-drop Shiny select input. This implementation creates a Shiny input that replicates much of the functionality of selectInput. Multiple zones for dragging and dropping are allowed. Currently utilizes Dragula JS library, https://github.com/bevacqua/dragula.

install.packages("remotes")
remotes::install_github("serenity-r/dndselectr")