feat: support virtual render with scroller plugin

[OpportunityLiu]

Description

Motivation and Context

#3669

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Enhancement (changes that improvement of current feature or performance)
• Refactoring (changes that neither fixes a bug nor adds a feature)
• Test Case (changes that add missing tests or correct existing tests)
• Code style optimization (changes that do not affect the meaning of the code)
• Docs (changes that only update documentation)
• Chore (changes that don't modify src or test files)

Self Check before Merge

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 14.28571% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 10.29%. Comparing base (bdfdadd) to head (0922873).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
packages/x6/src/graph/virtual-render.ts	16.66%	5 Missing ⚠️
packages/x6/src/graph/graph.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4243   +/-   ##
=======================================
  Coverage   10.29%   10.29%           
=======================================
  Files         180      180           
  Lines       10620    10620           
  Branches     2590     2590           
=======================================
  Hits         1093     1093           
  Misses       9438     9438           
  Partials       89       89           

Flag	Coverage Δ
x6	10.29% <14.28%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
packages/x6/src/graph/graph.ts	14.46% <0.00%> (ø)
packages/x6/src/graph/virtual-render.ts	19.04% <16.66%> (ø)

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[hustcc]

@OpportunityLiu 这个 PR 改动比较多，可以在描述中增加一些问题描述，结局思路，以及前后对照的 gif 嘛？

[OpportunityLiu]

这不就吧 scroll 的视口计算和变化事件暴露出去，然后就和普通的 virtual 没啥区别吗？

截图也看不出来啥吧

[OpportunityLiu]

反正我们就靠这些顶到 10k 节点的

https://cloudpss.net/dslab/diagram?simu_id=0be31156-f28a-49b6-aa87-3159f6

但是这里面改的可就不止这点了，整个 renderer 我都全重写了

[hustcc]

这不就吧 scroll 的视口计算和变化事件暴露出去，然后就和普通的 virtual 没啥区别吗？

截图也看不出来啥吧

看起来改动代码不少啊，现在也没有单元测试，有点不放心🤦‍♂️

[hustcc]

反正我们就靠这些顶到 10k 节点的

https://cloudpss.net/dslab/diagram?simu_id=0be31156-f28a-49b6-aa87-3159f6

但是这里面改的可就不止这点了，整个 renderer 我都全重写了

感觉这个优化很有价值啊，之前内部做 x6 和 react flow 的性能对比，没啥优势啊～

[hustcc]

思路参考：#2988