feat: add excel add-in

[guxiang02]

Description

Issue(s)

• Close/close/Fix/fix/Resolve/resolve: Issue Link

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 @guxiang02, 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!

此拉取请求旨在通过新增一份全面的中文文档，为用户提供 TDengine Excel Add-in 的详细指南。该文档旨在帮助用户更好地理解和利用此插件，以便高效地从 TDengine 服务器检索、分析和报告数据，从而提升数据处理和决策能力。

Highlights

• 新增 TDengine Excel 插件中文文档: 此拉取请求新增了 TDengine Excel Add-in 的详细中文文档，全面介绍了该插件的各项功能。
• 详细功能介绍: 文档涵盖了单值查询（当前值、历史值）、多值查询（原始数据、采样数据、时间点数据）、计算功能（计算数据、时间过滤）、事件分析（事件浏览器）、过滤（属性过滤、资产过滤）、属性查询以及数据更新和系统设置等模块。
• 操作示例与截图: 每个功能模块都提供了详细的操作说明、输入参数以及对应的输出结果截图，方便用户理解和使用。

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[gemini-code-assist]

Code Review

本次合并请求新增了 Excel Add-in 功能的中文说明文档。文档内容全面，结构清晰，对用户理解该功能非常有帮助。审查中发现了一些可以改进的细节，主要涉及文本格式和内容准确性，例如多余的空格、产品名称拼写错误、不一致的标点符号以及因复制粘贴导致的标题错误。我已在具体的审查评论中提供了修改建议。修复这些小问题将进一步提升文档的质量和专业性。

[Copilot]

Pull request overview

This pull request adds three PNG image files for Excel Add-in documentation in Chinese. The images are screenshots of the Excel Add-in UI showing different data query features (timed data, time filter, and properties panel). These images are referenced in the existing Chinese documentation at docs/05-basic/10-excel-add-in.md.

Key Changes:

• Added static/docs-img/excel-add-in/timed-data.png (118 lines)
• Added static/docs-img/excel-add-in/time-filter.png (325 lines)
• Added static/docs-img/excel-add-in/properties.png (10 lines)

Reviewed changes

Copilot reviewed 1 out of 12 changed files in this pull request and generated no comments.

File	Description
static/docs-img/excel-add-in/timed-data.png	Screenshot showing timed data query feature in Excel Add-in
static/docs-img/excel-add-in/time-filter.png	Screenshot showing time filter configuration interface
static/docs-img/excel-add-in/properties.png	Screenshot showing properties panel for data items

Review Status: No code-related issues found. The images are binary PNG files that are already referenced in the existing Chinese documentation. The file paths and naming conventions are consistent with other images in the same directory. Since these are binary image assets for documentation purposes and cannot be meaningfully reviewed from the diff output, this PR appears to be a straightforward addition of localized documentation assets.

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[wingwing2005]

LGTM