There is no fancy command line tool to get started. Instead, we'll just clone a repository. Go back to your project home folder and clone the repo. Then change directories into the repo and clean up the Git association so you can start fresh.
git clone https://github.com/michaellperry/starter-javascript-workbox-react.git workboxpwa
cd workboxpwa
rm -rf .git
npm install
Then you can build and run the solution.
npm run build
npm run dev
The application starts at http://localhost:8080.