feat: 支持自定义节点/边的唯一标识 #4442

[Caaalabash]

Description

拓展Cell基类，添加customId静态方法，便于自定义节点/边id

Motivation and Context

我的使用场景 #4442 需要让节点能按照不同的前缀生成id，翻阅了相关issue都没有一个较为简单的办法

因此考虑扩展Cell基类，添加customId静态方法：

• 在不重写customId方法时：和原行为一致，通过StringExt.uuid()创建id
• 在重写customId方法时，用户可根据传入的metadata信息自定义id

import { Cell } from '@antv/x6'

let sid = 0
Cell.customId = ({ shape }) => {
  return `${shape}_${sid++}`
}

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.

[x6-bot]

👋 @Caaalabash

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