Add support for TRUNCATE TABLE

This should be quite trivial as the SQL is very simple.

TRUNCATE [ TABLE ] [ ONLY ] name [ * ] [, ... ]
    [ RESTART IDENTITY | CONTINUE IDENTITY ] [ CASCADE | RESTRICT ]

We can apply this method to the Hazaar\DBI\DBD\BaseDriver and have hooks into the Hazaar\DBI\Adapter and Hazaar\DBI\Table classes.