Rcon Command Changes

- moved the rcon commands to the gamedata files, so they can be extended.

src/ARKServerManager/Lib/ServerApp.cs

@@ -2437,7 +2437,7 @@ namespace ServerManagerTool.Lib
                     return ServerRcon.RCON_COMMAND_SERVERCHAT;
 
                 default:
-                    return ServerRcon.RCON_COMMAND_BROADCAST;
+                    return commandValue.ToLower();
             }
         }