use_recommended: Add recommended elements
In golem: A Framework for Robust Shiny Applications

use_recommended_deps: Adds shiny, DT, attempt, glue, golem, htmltools to dependencies
use_recommended_tests: Adds a test folder and copy the golem tests

use_recommended_deps(
  pkg = get_golem_wd(),
  recommended = c("shiny", "DT", "attempt", "glue", "htmltools", "golem")
)

use_recommended_tests(
  pkg = get_golem_wd(),
  spellcheck = TRUE,
  vignettes = TRUE,
  lang = "en-US",
  error = FALSE
)

`pkg`	Path to the root of the package. Default is `get_golem_wd()`.
`recommended`	A vector of recommended packages.
`spellcheck`	Whether or not to use a spellcheck test.
`vignettes`	Logical, `TRUE` to spell check all `rmd` and `rnw` files in the `vignettes/` folder.
`lang`	Preferred spelling language. Usually either `"en-US"` or `"en-GB"`.
`error`	Logical, indicating whether the unit test should fail if spelling errors are found. Defaults to `FALSE`, which does not error, but prints potential spelling errors