Add room option to reveal armies/spots/colors on match load

[L3-M]

Create a new room option to reveal all players’ factions and positions during the loading screen when a match starts. In Zero Hour, if players choose “Random” army or random spawn, opponents don’t know their faction/spot, which can give slight unfair advantages. GenTool’s Random Balance feature reveal enemy random armies, random colors and starting positions as well on the load screen:

Similar opt-in setting, if enabled in the lobby by all players or the host, once the game loads every player’s army, spot and color is shown to all players. This keeps the game fair and balanced when using random selections, as everyone starts with full knowledge of all factions.

[xezon]

I think we can simplify this implementation by using the Game Setup Profiles that we want to add. The host will then have authority over the setting. But this is a longer term feature.