Add optional "no in game chat" feature - $50

[Belonit]

https://github.com/CnCNet/yr-patches/issues/7

About Some players are often trolled within in-game chat, mostly commoly in ranked matches. (Quickmatch)

As a player, I want to:

• Have the ability to disable the chat entirely so no chat is received from any player.
• To be notified in game when attempting to chat with it disabled, e.g. "You currently have in-game chat disabled".

Task detail: Disabling in-game chat should be handled by the client. Spawner should read from RA2MD.ini