SNOW-726743: [HTAP] LAST QUERY ID - Driver API for PHP/PDO

[ghost]

sdk issue124
In PDO the query execution is basically on connection level (.e.g using PDO::query https://www.php.net/manual/en/pdo.query.php) and the statement class is for one query returned from PDO::query(). https://www.php.net/manual/en/class.pdostatement.php
So the query id has to be saved on connection level. Especially for the failure case the PDO::query() return false and no statement instance available.

Add driver specific attribute SNOWFLAKE_ATTR_QUERY_ID can be used for PDO::getAttribute() and PDOStatement::getAttribute()
sample code:

    $dbh = new PDO("snowflake:account=<account_name>", "<user>", "<password>");
    $sth = $dbh->query("select 1");
    $qid = $dbh->getAttribute(PDO::SNOWFLAKE_ATTR_QUERY_ID);
    $sqid = $sth->getAttribute(PDO::SNOWFLAKE_ATTR_QUERY_ID);

both qid and sqid will return the same query id of select 1

[sfc-gh-igarish]

LGTM