增加仿照wps填充柄Demo

[santcool]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
• Refactoring
• Update dependency
• Code style optimization
• Test Case
• Branch merge
• [✅] Site / documentation update
• Demo update
• Workflow
• Chore
• Release
• Other (about what?)

🔗 Related issue link

none

💡 Background and solution

The fill handle demo is too easy，we want a full-function fill handle,so we create this demo and update the document.

📝 Changelog

Implemented a fill handle function similar to wps, mainly supporting

• Increasing/decreasing numbers in a single cell
• Increasing/decreasing numbers in two cells in equal increments
• Copying and filling pure text cell content
• Mixing text and numbers, increasing/decreasing the last digit
• Filling more than two cells according to the interval of a single cell (select 3 cells and drag down, the 4th cell will be filled according to the content of the 1st, the 5th according to the content of the 2nd...)

Language	Changelog
🇺🇸 English	✅
🇨🇳 Chinese

☑️ Self-Check before Merge

⚠️ Please check all items below before requesting a reviewing. ⚠️

• [✅] Doc is updated/provided
• [✅] Demo is updated/provided
• [✅] TypeScript definition is updated/provided
• [✅] Changelog is provided

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🚀 Summary

copilot:summary

🔍 Walkthrough

copilot:walkthrough

[fangsmile]

@santcool 请加一下飞书群 单独加下我 沟通下这个能力的扩展插件实现方式，谢谢!