fix: Ensure single Redis message listener

[gabrielmatau79]

Destructuring the 'message' listener outside of the addLiveSession method to be initialized in the constructor, the following changes are made:

• The Redis 'message' listener is removed, and a method initializeRedisMessageListener() is defined, which will be instantiated in the constructor after the Redis connection.
• In the addLiveSession method, the socket_id parameter is added to the session storage.
• When the listener receives a new message, it will call the handleMessages function, which will be responsible for constructing the message to be sent to the corresponding socket_id.