Native func support

[flibdev]

Added a hook to the RTTIRegistrator constructor to add callback functions that are called before the final.redscripts is loaded, allowing for new native methods to be defined in RED4ext and called from Redscript.

RTTIRegistrator::Add() can be called immediately after the dll attaches:

RED4EXT_C_EXPORT void RED4EXT_CALL RegisterTypes() {}
RED4EXT_C_EXPORT void RED4EXT_CALL PostRegisterTypes() {}

BOOL APIENTRY DllMain(HMODULE aModule, DWORD aReason, LPVOID aReserved)
{
    switch (aReason)
    {
    case DLL_PROCESS_ATTACH:
        DisableThreadLibraryCalls(aModule);
        RED4ext::RTTIRegistrator::Add(RegisterTypes, PostRegisterTypes);
        break;
    }

    return TRUE;
}

Also fleshed out one of the unknown chunks in the CBaseFunction class: a DataBuffer to the compiled redscript bytecode

[WopsS]

This is

Thanks!