de_russka for css v34-88

On the de_russka map, the terrorist team will have to destroy two warehouses. The design of the map is quite interesting + it is completely covered with snow. A few words about the balance: it will not be difficult for counter-terrorists to gain a foothold and protect both sites, at the same time, terrorists have many loopholes and room for maneuver, so the map can be considered quite balanced.