docs(taosgen): support producing messages to Kafka

[YamingPei]

Description

Support producing messages to Kafka

Jira: https://jira.taosdata.com:18080/browse/TS-7353

Checklist

Please check the items in the checklist if applicable.

• Is the user manual updated?
• Are the test cases passed and automated?
• Is there no significant decrease in test coverage?

[gemini-code-assist]

Summary of Changes

Hello @YamingPei, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances taosgen by introducing native support for producing messages to Kafka. This allows users to leverage taosgen for simulating data generation and streaming scenarios directly into Kafka, complementing its existing capabilities for TDengine and MQTT. The accompanying documentation has been thoroughly updated to guide users through the new Kafka configuration and usage, alongside minor refactorings of existing action names for improved clarity.

Highlights

• Kafka Integration: taosgen now supports producing messages directly to Kafka brokers, significantly expanding its data generation and publishing capabilities.
• Action Renaming: The tdengine/insert-data and mqtt/publish-data actions have been renamed to tdengine/insert and mqtt/publish respectively for improved clarity and conciseness.
• Comprehensive Documentation Updates: Both English and Chinese documentation (taosgen.md) have been thoroughly updated to reflect Kafka support, new configuration parameters, action names, and include a detailed Kafka example.

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[gemini-code-assist]

Code Review

This pull request adds documentation for the new feature of producing messages to Kafka with taosgen. The changes are well-structured and cover configuration examples, as well as updates to the English and Chinese reference manuals. I've identified a few areas for improvement, mainly concerning consistency in naming and ensuring that configuration examples align with their descriptions in the documentation. I've also found a minor typo and a formatting issue in the Chinese documentation. Overall, this is a great addition to the documentation.