Use WebSocket over polling for updating game state

[aashutoshrathi]

Description

The game state updates right now, as the front end polls every second for changes in the state of the game from the MRU. This can be done more efficiently by having a WebSocket endpoint on the express server like GET wss://..../:gameId subscribing which, will send all the game updates to the client, only when there are changes in State.

This would require a listener on SDK for C1 confirmations and also, have to update state on C2X.