Kafka: handle commit errors and add logging

[kjamrog]

Summary of changes:

• some errors on offset commit are expected and related to group rebalancing when new consumer joins. This PR adds graceful handling for them - we are logging them but they don't need to be thrown
• added event listeners with logs for better observability of the consumer lifetime

[Copilot]

Pull Request Overview

This PR enhances the Kafka consumer by adding explicit group joining, event logging, and centralized commit error handling.

• Introduces protocol error code constants for group-rebalance scenarios.
• Calls joinGroup before consuming and logs consumer group lifecycle events.
• Replaces direct message.commit() calls with a commitMessage wrapper that handles and logs commit errors.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/kafka/lib/utils/errorCodes.ts	Added ILLEGAL_GENERATION, UNKNOWN_MEMBER_ID, and REBALANCE_IN_PROGRESS constants.
packages/kafka/lib/AbstractKafkaConsumer.ts	Inserted joinGroup, consumer event logging, and a commitMessage method with error handling.

Comments suppressed due to low confidence (2)

packages/kafka/lib/AbstractKafkaConsumer.ts:212

• [nitpick] Add a brief JSDoc comment explaining that this method wraps message.commit() and handles expected rebalance errors via handleResponseErrorOnCommit.

  private async commitMessage(message: Message<string, object, string, string>) {

packages/kafka/lib/AbstractKafkaConsumer.ts:212

• Introduce unit tests for commitMessage and handleResponseErrorOnCommit to verify that rebalance-related errors are logged and swallowed while other errors are thrown.

  private async commitMessage(message: Message<string, object, string, string>) {

[kjamrog]

Switching back to biome 1.9.4 as the new version is not compatible with our config in lokalise/biome-config. We need to upgrade there first. (The version in MQT was updated automatically few days ago, that's why we didn't have issues before: https://github.com/kibertoad/message-queue-toolkit/pull/296/files)