Client request to join table
The identifier of table the player wishes to join
Whether to join as spectator (when true) or not (when false or omitted).
JOIN is sent from client to the server to request a table join. The server will respond with RESULT telling us the success of the action. If the action was successful the client will also receive a JOIN, which we should act upon. If the join succeeds it is likely an UPDATE of type 'table' will also be necessary..