[Table] 支持获取获取全部树形结构数据

[chaishi]

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交

🔗 相关 Issue

💡 需求背景和解决方案

📝 更新日志

• feat(Table): appendTo 支持添加新节点到根节点，tdesign-vue-next issue#849

• feat(Table): 新增 getTreeNode，用于获取整个树形结构，tdesign-vue-next issue#849

• feat(Table): EnhancedTable 支持事件 @drag-sort

• 本条 PR 不需要纳入 Changelog

☑️ 请求合并前的自查清单

⚠️ 请自检并全部勾选全部选项。⚠️

• 文档已补充或无须补充
• 代码演示已提供或无须提供
• TypeScript 定义已补充或无须补充
• Changelog 已提供或无须提供

[codecov-commenter]

Codecov Report

❌ Patch coverage is 5.26316% with 54 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.09%. Comparing base (a0db0df) to head (659b6b5).
⚠️ Report is 1548 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/table/hooks/tree-store.ts	0.00%	36 Missing ⚠️
src/table/hooks/useTreeData.tsx	11.76%	15 Missing ⚠️
src/table/enhanced-table.tsx	25.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #931      +/-   ##
===========================================
+ Coverage    57.56%   60.09%   +2.53%     
===========================================
  Files          346      376      +30     
  Lines        12828    14338    +1510     
  Branches      2405     2669     +264     
===========================================
+ Hits          7384     8617    +1233     
- Misses        5200     5458     +258     
- Partials       244      263      +19     

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