[Csgo] Vip core r1ko support

[Truyn]

I propose to integrate one of the most popular vip systems in the world for csgo

https://github.com/R1KO/VIP-Core Issuing classes by vip group, not admin groups would be cool(the group admin does not need to be removed: D) Many people use crutches, and all sorts of workarounds for issuing VIPs to players, class users. I think with such an update you would make life easier for many people :).

https://hlmod.ru/threads/vip-admin-privileges.52585/
i use this + fix which writes manually to admins.cfg.

If you do not register in admins.cfg due to the non-instant issue of the admin group, the VIP plugin, the classes get confused (After each map are discarded !zclass)

[Truyn]

Have

    "group"                 ""
    "sm_flags"  

    need + "vip_group" ""