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Avro Format Support Added for Kafka in ClickHouse

Avro format works against Kafka. Setting output_format_avro_rows_in_file added. #30351 (Ilya Golshtein).
Added support for Avro format when working with Kafka and introduced the output_format_avro_rows_in_file setting.

Why it matters

This feature enables users to properly handle Avro format data directly from Kafka sources, improving compatibility and data processing workflows involving Avro-encoded messages.

How to use it

To use this feature, set the output_format_avro_rows_in_file setting in your ClickHouse configuration or query to enable Avro format support when consuming data from Kafka.