How do I add an "add to home screen" suggestion?

Question

Android

Good afternoon. Who knows how to add an offer with an "add to home screen" button?
Should be:

• https
  
• manifest.json
  
• Chrome above n version
  

Also, it seems, there should be service-worker.js , according to the idea, it can even be empty. But all this does not give the desired result.
Example:

Answer 1

Chrome automatically displays the banner when your app meets the following criteria:
https://developers.google.com/web/fundamentals/eng...