Support offline

[uasan]

Hello.
Perhaps it has already been discussed somewhere, to use the web bundle as a cache for offline work of the web application.

Many applications create primitive service workers that populate the cache for the application to work offline.

If there is an option to use the bundle as an offline application cache, it will be a much cleaner solution than writing less efficient code in a service worker that essentially duplicates the goals that the web bundle has already achieved.