Incorporate an "Install as app" button somehow

[julianjelfs]

The experience of the app is enhanced in a number of ways if it is installed to home screen. Not everyone knows how to do that so we can and probably should encourage people to install OpenChat to home screen using the following techniques.

https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Guides/Making_PWAs_installable#triggering_the_install_prompt