wip(sync): POC of using Redis for pubsub

[yohanboniface]

TODO

• add expire to peers registry hash in redis, as for now when the server closes the connection we have extra users
• make that the peer uuid is created by the client, so when it reconnects, it uses the same, and does not create a new one
• see if we can use a connection_pool
• use dynamic websocket_uri (that must include the map id)
• integrate Redis in playwright tests