The snap_*() server functions inject this script into the page on first
use, so including it in the UI is optional. Include it explicitly when you
want the script to load with the page, before the server function runs.
Examples
snap_dependency()
#> List of 10
#> $ name : chr "shinysnap"
#> $ version : chr "0.1.0"
#> $ src :List of 1
#> ..$ file: chr "/home/runner/work/_temp/Library/shinysnap/www"
#> $ meta : NULL
#> $ script : chr "shinysnap.js"
#> $ stylesheet: NULL
#> $ head : NULL
#> $ attachment: NULL
#> $ package : NULL
#> $ all_files : logi TRUE
#> - attr(*, "class")= chr "html_dependency"
