Get data download dir
Details
By default, stats19 downloads files to a temporary directory.
You can change this behavior to save the files in a permanent directory.
This is done by setting the STATS19_DOWNLOAD_DIRECTORY environment variable.
A convenient way to do this is by adding STATS19_DOWNLOAD_DIRECTORY=/path/to/a/dir
to your .Renviron file, which can be opened by usethis::edit_r_environ().