Add WebRTC support

[zoltyvigo]

Currently Jitsi Meet is used, but it has a problem, in mobile phones and tablets, it forces to install an additional application, many users do not like it.

For this reason I request the support of WebRTC, it is fully compatible with mobile phones and it is not necessary to install additional software.

[ojamin]

It's unlikely that we are going to support anything outside of standard Jitsi. I have found a thread on the Jitsi forums leading to where the app link could be overridden, potentially allowing mobile users to use the same interface as in the web browser.

https://community.jitsi.org/t/jitsi-users-allow-mobile-web-browsing/13791/2

I'll leave this open for investigation to see if giving users an option could be implemented cleanly.

[Shillos]

I have had the same issue on mobile it appeared to have a jitsi logo and just under it said download so I downloaded it as a separate app and when loading the chat with jitsi it opened it as a separate video chat instead within kiwi. Ok thought this might be overcome as a fix on a later date, so thought nothing about it.

[ojamin]

Handing off to the Jitsi app on mobile is what its designed to do and thus is expected behaviour in Kiwi currently.