Fetch Record or dpitStmt_getRecord

[mrwaynedev]

As we've disscussed in #142
My question arises because I can previously define what type of data I'm going to fetch with dpiStmt_defineValue and then I imagined that I could use something like dpitStmt_getRecord, but there is no exist.
So, Currently what I do based on the documentation is to fetch column by column, but perhaps there is a more optimal way to fetch all columns at once since the pointer is already there.
I really appreciate your attention. Thanks!