In interactive mode, ask users for permission to create a
.sen2r settings directory, in which to store files required by the packages.
The function can be used also in non-interactive mode by setting
agree = TRUE
.
The function has no effect if the directory already exists.
give_write_permission(agree = NA)
Logical: if TRUE, allow creating the hidden directory; if FALSE, do not allow it; if NA (default), the permission is asked to the user in interactive mode (in non-interactive mode, the permission is denied).
Logical: if TRUE, R was authorised saving in the directory; if FALSE, it was not and a temporary directory is being used.