Implement PWA (progressive web app ) manifest - make t212 installable

Hi, it would be very useful to be able to install the within the browser as an app. To do this the manifest.json must be improved / extended.

If you want to see how it works you might check out which has implemented it.

An icon will appear

Not quite what you are referring to but you can do something similar following the below

I use it and its nicer than having to have window open in chrome browser

Actually i noticed this is implemented already for community.trading212 :wink:
@ryan9921 The procedure shown in the link does not seem to work properly, it still opens in chrome for me (not a separate window).