You're pretty fucking bad at doing research then.
There's Valve's Official SDK https://******.com/ValveSoftware/source-sdk-2013
There's Valve's Leaked 2007 SDK which you can find on google
There's Alliedmodder's HL2 SDK https://******.com/pmrowla/hl2sdk-csgo
There's the CS:GO fork of the SDK above https://******.com/MarkHC/CSGO-SDK-Example
None of the above are "copy-paste-able" though. You NEED to learn how to search or reverse-engineer what's needed by yourself.
Of couse, there's the internal base I release couple days ago which should work out of the box https://******.com/MarkHC/CSGOSimple