shell32: add SHCreateSessionKey stub (try 2)

[Nikolay Sivov]

> +/*************************************************************************
> + * SHCreateSessionKey                   [SHELL32.723] NT 4.0
> + *
> + */
> +HRESULT WINAPI SHCreateSessionKey(REGSAM access, HKEY *hkey)
> +{
> +        FIXME("stub: %u %p\n", access, hkey);
> +        return ERROR_CALL_NOT_IMPLEMENTED;
> +}

'access' is a 32bit bit mask, return value is HRESULT.