Get TokenRow from Row

[lpj145]

We're working with stream out from sql server, this implementation will improve it a lot.

[lpj145]

@tomhoule please take a look at this, it's very simple.

With that way we should achieve something like this interation:

let sql_meta: ResultMetadata;
let token_row : TokenRow = stream.into();
for column_index in sql_meta.columns().len() {
    match token_row.get(column_index) {
      // match column data types
    }
}

[tomhoule]

Unfortunately I'm not the owner of this crate anymore.

[ghost]

This pull request is very much needed

Thanks @lpj145

[pimeys]

Unfortunately I'm also not the owner of this crate anymore either.