Initialize Duo package
Add Duo class for duo package
Split 'workbench/crockett95/duo/' into commit '7f96371b2226050928ba2546e7a5a7de8ec96151'

git-subtree-dir: workbench/crockett95/duo
git-subtree-mainline: 01f8c4f9bead1a076180a2c2496611343aada28c
git-subtree-split: 7f96371b2226050928ba2546e7a5a7de8ec96151