Implement Support for INSERT Query with Kafka Tables

Why it matters

This feature allows users to insert data directly into Kafka tables using INSERT statements, enabling more straightforward integration and data ingestion workflows with Kafka topics through ClickHouse.

How to use it

Users can now execute INSERT INTO kafka_table VALUES (...) to insert data into ClickHouse tables that use the Kafka engine. This simplifies data publishing to Kafka from ClickHouse, complementing existing Kafka consumption capabilities.