Move interface stuff to utility file.

* Alternative method to using dlopen and dlsym.

* Accepts partial version strings.

Signed-off-by: aixxe <me@aixxe.net>

include/cstrike/Classes/Interface.h

@@ -1,11 +0,0 @@
-#pragma once
-
-typedef void* (*CreateInterfaceFn) (const char*, int*);
-typedef void* (*InstantiateInterfaceFn) ();
-
-class InterfaceReg {
-	public:
-		InstantiateInterfaceFn m_CreateFn;
-		const char* m_pName;
-		InterfaceReg* m_pNext;
-};