Returns the file system path to the directory containing TempleCBE's bundled SAS macros (`cbe_brier_score.sas`, `cbe_cox_phreg.sas`, `cbe_counting_process.sas`, and `cbe_macros.sas`).
Examples
try(sas_macro_dir())
#> [1] "/tmp/RtmppxIjyF/temp_libpath2188179f1d87/TempleCBE/sas"
