NewServer creates a server.

Add is an event sent from the client to the server, that adds a player to the pool.

Match is an event sent from the server to the client, if a match was created.

Remove is an event sent from the client to the server, if a certain players leaves the pool.

Size is a double-side event: - When sent from the client to the server, it will ask for the current amount of players in queue.

Unknown event is returned if no other event prefix was detected.