Basic ClickHouse HTTP query wrapper

[lmangani]

WIP to emulate the following macro in the extension. Currently missing optional/default parameters support.

CREATE OR REPLACE MACRO clickhouse(query, server := 'https://play.clickhouse.com', user := 'play', format := 'JSONEachRow') AS TABLE
    SELECT * FROM read_json_auto(concat(server, '/?default_format=', format, '&user=', user, '&query=', query));


SELECT * FROM clickhouse("SELECT number as once, number *2 as twice FROM numbers(10)")

Checklist

• Waiting for DuckDB 1.1.0
  • Adding default parameters to scalar macros defined as a DefaultMacro
• ch_scan function