Support DuckDB Dialect

[chanon]

DuckDB is gaining a lot of popularity and version 1.0.0 was just released.

the project has attracted tens of thousands of stars and followers on GitHub and social media platforms. Download counts are in the millions each month

The SQL dialect I think is very similar to PostgreSQL and I have been able to use it in PostgreSQL mode initially, but the issue I'm running into which is intractable is parameterized queries use ? characters instead of $1, $2 ...

Not sure if there is another existing dialect that could work. (Tried MySQL, but more complex CTE / window function queries failed.)

Thank you so much for this awesome package!