feat(taos): support dsn with user/password

[YamingPei]

Description

taos shell (cli) supports dsn with user/password.

Issue(s)

• https://project.feishu.cn/taosdata_td/defect/detail/6495051884

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 introduces a significant enhancement to the taos CLI, allowing users to specify authentication credentials directly within the Data Source Name (DSN). This change simplifies connection strings for the command-line tool, making it more convenient and secure to connect to TDengine instances requiring user authentication. The underlying connection logic has been refactored to utilize a more robust DSN parsing mechanism, and comprehensive testing has been added to ensure the reliability of this new feature.

Highlights

• DSN with User/Password Support: The taos command-line interface (CLI) now fully supports Data Source Names (DSNs) that include embedded username and password credentials, enhancing connection flexibility and security.
• Simplified DSN Connection Logic: The internal DSN connection handling in shellEngine.c has been streamlined by leveraging the taos_connect_with_dsn function, removing redundant custom DSN parsing logic.
• New Test Case for DSN Authentication: A new test case has been added to test_tool_taos_cli.py to validate the functionality of connecting via DSNs that specify both a username and password.

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[gemini-code-assist]

Code Review

This pull request introduces support for DSNs with embedded user and password credentials in the taos CLI. The implementation refactors the connection logic in shellEngine.c to delegate DSN parsing to the taos_connect_with_dsn function from the client library. This is a good simplification, making the shell's connection logic cleaner and more robust by separating DSN handling from parameter-based connections. A corresponding test case has been added in test_tool_taos_cli.py to verify the new functionality. The changes are well-implemented and improve the code's maintainability.

[YamingPei]

失败 case 与 PR 无关