This function adds a package-level documentation file (pkg-package.R) in
the R/ folder. This file will make help available to the user via ?pkg
(where pkg is the name of the package). It a good place to put general
directives like @import and @importFrom.
See also
Other create files:
add_citation(),
add_code_of_conduct(),
add_compendium(),
add_contributing(),
add_description(),
add_dockerfile(),
add_license(),
add_makefile(),
add_readme_rmd(),
add_renv(),
add_testthat(),
add_vignette()
