Feature/workbox recipes

[Snugug]

R: @jeffposnick @philipwalton

Fixes #2622

Adds an experimental workbox-recipes module that bundles the configuration for common recipes into config-optional function calls. Example of what default usage would look like:

import {
  pageCache,
  imageCache,
  staticResourceCache,
  googleFontsCache,
  offlineFallback,
} from 'workbox-recipes';
import { precacheAndRoute } from 'workbox-precaching';

// Include offline.html in the manifest
precacheAndRoute(self.__WB_MANIFEST);

// request.mode === 'navigate', network first,   'pages' cachename, 3s timeout, [0, 200] statuses
pageCache();

// request.destination === 'style' || 'script' || 'worker', stale while revalidate first,   'static-resources' cachename, [0, 200] statuses
staticResourceCache();

// request.destination === 'image', cache first,   'images' cachename,, [0, 200] statuses, 30 day max age, 60 max entries
imageCache();

// Same as https://developers.google.com/web/tools/workbox/guides/common-recipes
googleFontsCache();

// Same as https://developers.google.com/web/tools/workbox/guides/advanced-recipes#comprehensive_fallbacks, but just setCacheHandler, and pulling from precache match
offlineFallback();