Add weapon_knife_css

[sjain882]

Hey there,

This knife model got added today in the new update.

https://blog.counter-strike.net/index.php/2019/10/25894/

Thanks so much in advance. Hope you're doing well!

[SergeyKasmy]

Done

[sjain882]

Christ, within an hour, just like the Shiv, well done, thanks so much

[SergeyKasmy]

It's all good, I was just doing my stuff on the PC and it was kinda a nobrainer to add these two or something lines. Some time ago I rewrote the script to be more modular for a reason after all :)