New Units for DPR/LPR

Added multiple voice ​​for the NATO

fixbug

improved the working mechanism of FPV. Now it will explode just by touching the vehicle. No need to detonate manually

Reduced the cost of anti-aircraft units, MLRS, and most infantry units

Supply vehicles no longer cost a lot of ammo to resupply after a battle

Removed multiplayer mode

Supply trucks and pickup trucks now have ammunition boxes. Click on the inventory and drag them to the ground to resupply. If the ammunition box runs out, you can resupply it through the supply helicopter, and the pickup can resupply it through the supply truck