Partial porting over of vector controller logic to react sdk.

src/CallHandler.js

src/WhoIsTyping.js

src/controllers/atoms/EnableNotificationsButton.js

src/controllers/atoms/MemberAvatar.js

src/controllers/atoms/voip/VideoFeed.js

src/controllers/molecules/EventAsTextTile.js

src/controllers/molecules/MemberTile.js

src/controllers/molecules/RoomSettings.js

src/controllers/molecules/voip/CallView.js

src/controllers/molecules/voip/IncomingCallBox.js

src/controllers/molecules/voip/VideoView.js

src/controllers/organisms/RoomView.js