Separate revealing remaining hand with revealed tiles (pong/kong/chow during game) on win

[b-tsao]

Pong, kong, chow tiles are put in the revealed hand array, but on win the rest of the remaining hand are also mixed into the revealed hand array. This messes with knowing if there were any pong, kong, or chow during the gameplay though.

[b-tsao]

At the end of the hand (when someone has mahjong), there should be an option to allow players who did not win to reveal their tiles.

The server should contain a boolean for each player to check if the hand is revealed. If so return the hand as an array, if not return the hand as a number.

The client should check the boolean to determine if the hand is an array or num. The client should only allow the reveal option at the end of the game. The server will double check this as part of the allowed moves in the stage.