WCS VSS and AS-VAL for USSR

This mod is intended to be used with my "Better USSR" mod but it works fine without it

Made a variant of SF Sharpshooter Recon with the VSS
Made a variant of SF Sapper Recon with the AS-VAL

This mod fixes the volume for the 10rnd magazines and makes them take up less space than the 20rnd ones

Had to reduces the price of the PSO scopes down to 50 since the supply cost would get ridiculously high otherwise