Add template for package depending on tidyverse

[jacobbien]

It would include

• usethis::use_package(dplyr)
• use of .data as discussed here
• use of dplyr::filter() or #' @importFrom dplyr filter or perhaps two examples, one of each

[jacobbien]

It may be useful to look at https://github.com/jacobbien/jsm2022-project/blob/main/create-jsm2022.Rmd while writing template.