As part of #101, we'd like to create a minimal, but useful, Webpack add-on for those getting started with Progressive Web Apps. This would build on the work that was done for the default --init starting point in #119.

• Handle favicons and Web App Manifest. Either via a static include of some defaults (just the files) that get wired up using HTML Webpack Plugin with another plugin like https://github.com/jantimon/favicons-webpack-plugin. Most people do this statically.
• Add offline caching support for static assets (CSS, JS) w/sw-precache. We could also do it for HTML - if someone is building an SPA this would get them closer to an AppShell model style level of caching. If not, it would do full-page caching.
• Performance budgets by default?

Validation: It should be possible to take a simple app, even something like a rando TodoMVC implementation, run it with webpack-cli and this add-on and be able to generate an offline-first PWA that an get a decent score on Lighthouse.

I've also filed webpack/webpack.js.org#1145 for us to think about guidance around this topic for the official Webpack docs.