Add Player Disconnect Reasons.

No source file, test, or entry point is named. Start by searching for existing player disconnect handling and the PLAYER_DISCONNECT_REASON symbols, then inspect how compatibility is currently preserved. Done means the disconnect reasons are exposed without introducing the compatibility break described in the issue.

At the moment it breaks some compatibility, so far I haven't been able to come up with anything to prevent this from happening.

enum PLAYER_DISCONNECT_REASON:__PLAYER_DISCONNECT_REASON
{
	UNKNOWN_PLAYER_DISCONNECT_REASON            = -1,
	PLAYER_DISCONNECT_REASON_TIMEOUT,
	PLAYER_DISCONNECT_REASON_CRASH	            = PLAYER_DISCONNECT_REASON_TIMEOUT,
	PLAYER_DISCONNECT_REASON_QUIT,
	PLAYER_DISCONNECT_REASON_KICK,
	PLAYER_DISCONNECT_REASON_BAN	            = PLAYER_DISCONNECT_REASON_KICK
}
#define UNKNOWN_PLAYER_DISCONNECT_REASON           (PLAYER_DISCONNECT_REASON:-1)
#define PLAYER_DISCONNECT_REASON_TIMEOUT	   (PLAYER_DISCONNECT_REASON:0)
#define PLAYER_DISCONNECT_REASON_CRASH		   (PLAYER_DISCONNECT_REASON:0)
#define PLAYER_DISCONNECT_REASON_QUIT		   (PLAYER_DISCONNECT_REASON:1)
#define PLAYER_DISCONNECT_REASON_KICK	           (PLAYER_DISCONNECT_REASON:2)
#define PLAYER_DISCONNECT_REASON_BAN		   (PLAYER_DISCONNECT_REASON:2)