QUESTION How to make PWA the app from a website on the Getsimple CMS ?

[aukc]

Good afternoon! Need basic PWA app features!
The site works as a PWA app.
1. Icon as an app on the home screen. 
2. Open and work in a separate interface.
3. Work without Internet.
4. Push notifications.
5. If the site has been updated, then the PWA app has also been updated.