Support for Offline Docs

[manifestinteractive]

Issue Checklist:

• [X] There are no matching Open Feature Requests
• [X] There are no matching Closed Feature Requests
• [X] I've read the Contributing Guide
• [X] I'm following the Code of Conduct

Suggestion / Feature Request

It would be handy to have these docs be available offline. Using PWA you can install the website as an "app" and allow this helpful information to be carried with you wherever, without the need for internet access.

Resources:

• https://github.com/shadowwalker/next-pwa
• https://medium.com/readytowork-org/pwa-with-offline-support-using-next-pwa-package-nextjs-e42141984328

[manifestinteractive]

I've started PWA for this, but need to preload the site after install. That'll come in future versions.