Add video calls

[SteveALee]

Use webRTC or google hangouts might be better - especially as everything else is driven by google.

[SteveALee]

While WebRTC is peer to peer, we need signalling to set up calls and when users are behind NATs that requires a STUN or TURN server. Requires a lot of code so best to find a service and that is free or freely deployable for MVP

• Jitsi meet - run own server

• Matrix looks excellent as open distributed encrypted etc. - but perhaps too much baggage? Is built on Jitsi

  • Apps - riot chat app - full chat, we chat, mobile

  • JS SDK - https://github.com/matrix-org/matrix-js-sdk

  • Matrix has a react lib but currently bound to riot web app - but see https://github.com/vector-im/riot-web/issues/6570#issuecomment-383157073