feat: add dblClickSpeed init config (#1710)

[wang1212]

🤔 This is a ...

• New feature
• Bug fix
• Site / Document optimization
• TypeScript definition update
• Refactoring
• Performance improvement
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

• fixed G 能否开放参数, 来自定义双击的判定时机, 目前是写死的 200 ms #1710

💡 Background and solution

Previously, double-click detection was implemented internally with a hard-coded 200ms threshold.

Now, users are allowed to configure a dblClickSpeed initialization parameter to customize the speed of determining whether two consecutive clicks trigger a double-click event:

const canvas = new Canvas({
    // ...
    // allows to set to a custom value, default is 200 (ms)
    dblClickSpeed: 500
});

Please refer to the documentation for double click events: https://g-next.antv.vision/api/event/faq#%E9%BC%A0%E6%A0%87%E5%8F%8C%E5%87%BB%E4%BA%8B%E4%BB%B6

📝 Changelog

Language	Changelog
🇺🇸 English	add dblClickSpeed init config (#1710)
🇨🇳 Chinese	添加 dblClickSpeed 初始化配置 (#1710)

☑️ Self Check before Merge

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[hustcc]

为什么不直接一个 doubleClickDelay 变量？

[wang1212]

为什么不直接一个 doubleClickDelay 变量？

代码已经过重构，确保和现有的 apis 设计风格一致，暴露 dblClickSpeed 初始化参数变量，对于运行时修改场景暂未有相关需求，不做过度设计。

参数配置的命名参考了 chart.js 项目：https://www.chartjs.org/chartjs-plugin-annotation/1.0.2/guide/interaction.html#configuration