feat(Table): support cell attr

[anlyyao]

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交
• 文档改进
• 演示代码改进
• 组件样式/交互改进
• CI/CD 改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 其他

🔗 相关 Issue

💡 需求背景和解决方案

📝 更新日志

• feat(Table): 支持 cell 属性，用于自定义单元格

• 本条 PR 不需要纳入 Changelog

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⚠️ 请自检并全部勾选全部选项。⚠️

• 文档已补充或无须补充
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• TypeScript 定义已补充或无须补充
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[github-actions]

Size Change: +330 B (0%)

Total Size: 503 kB

Filename	Size	Change
./dist/tdesign.js	294 kB	+201 B (0%)
./dist/tdesign.min.js	144 kB	+129 B (0%)

ℹ️ View Unchanged

Filename	Size
./dist/reset.css	672 B
./dist/tdesign.css	37.6 kB
./dist/tdesign.min.css	27.2 kB

[github-actions]

[github-actions]

Size Change: +330 B (0%)

Total Size: 503 kB

Filename	Size	Change
./dist/tdesign.js	294 kB	+201 B (0%)
./dist/tdesign.min.js	144 kB	+129 B (0%)

ℹ️ View Unchanged

Filename	Size
./dist/reset.css	672 B
./dist/tdesign.css	37.6 kB
./dist/tdesign.min.css	27.2 kB

[github-actions]

Size Change: +332 B (0%)

Total Size: 503 kB

Filename	Size	Change
./dist/tdesign.js	294 kB	+204 B (0%)
./dist/tdesign.min.js	144 kB	+128 B (0%)

ℹ️ View Unchanged

Filename	Size
./dist/reset.css	672 B
./dist/tdesign.css	37.6 kB
./dist/tdesign.min.css	27.2 kB