Timeline时间轴,支持nz-timeline-item上添加label

[zd5043039119]

What problem does this feature solve?

可以让时间轴左右同时显示文字, ant design 4.15.4已支持类似特性

 <Radio.Group
        onChange={onChange}
        value={mode}
        style={{
          marginBottom: 20,
        }}
      >
        <Radio value="left">Left</Radio>
        <Radio value="right">Right</Radio>
        <Radio value="alternate">Alternate</Radio>
      </Radio.Group>
      <Timeline mode={mode}>
        <Timeline.Item label="2015-09-01">Create a services</Timeline.Item>
        <Timeline.Item label="2015-09-01 09:12:11">Solve initial network problems</Timeline.Item>
        <Timeline.Item>Technical testing</Timeline.Item>
        <Timeline.Item label="2015-09-01 09:12:11">Network problems being solved</Timeline.Item>
      </Timeline>
    </>

What does the proposed API look like?

<nz-timeline>
  <nz-timeline-item label="2015-09-01">创建服务现场 </nz-timeline-item>
  <nz-timeline-item label="2015-09-01">初步排除网络异常</nz-timeline-item>
  <nz-timeline-item label="2015-09-01">技术测试异常</nz-timeline-item>
  <nz-timeline-item label="2015-09-01">网络异常正在修复</nz-timeline-item>
</nz-timeline>
~~~<!-- generated by ng-zorro-issue-helper. DO NOT REMOVE -->

[zorro-bot]

Translation of this issue:

Timeline Timeline, support NZ-TIMELINE-ITEM Add Label

What proBLEES THIS Feature SOLVE?

You can display text at the same time as the timeline, Ant Design 4.15.4 supports similar characteristics

 <Radio.group
        Onchange = {onchange}
        Value = {mod}
        STYLE = {{{
          Marginbottom: 20,
        }
      >
        <Radio Value = "Left"> Left </ radio>
        <Radio Value = "Right"> Right </ Radio>
        <Radio Value = "Alternate> Alternate </ RADIO>
      </Radio.group>
      <Timeline Mode = {MODE}>
        <Timeline.Item Label = "2015-09-01"> CREATE A SERVICES </Timeline.Item>
        <Timeline.Item Label = "2015-09-01 09:12:11> Solve Initial Network Problems </timeline.Item>
        <Timeline.Item> Technical Testing </timeline.Item>
        <Timeline.Item Label = "2015-09-01 09:12:11"> Network problems being solid </timeline.Item>
      </ Timeline>
    </>

What does The proposed API Look Like?

<NZ-TIMELINE>
  <NZ-TIMELINE-ITEM Label = "2015-09-01"> Create a service site </ nz-timeline-item>
  <NZ-TIMELINE-ITEM Label = "2015-09-01"> Initial exclude network exception </ nz-timeline-item>
  <nz-timeline-item label = "2015-09-01"> Technical test exception </ NZ-TIMELINE-ITEM>
  <nz-timeline-item label = "2015-09-01"> Network exception is repairing </ nz-timeline-item>
</ NZ-TIMELINE>

[zorro-bot]

Hello @zd5043039119. We totally like your proposal/feedback, welcome to send us a Pull Request for it. Please fill the Pull Request Template here, provide documentation/test cases if needed and make sure CI passed, we will review it soon. Appreciate it advance and we are looking forward to your contribution!

你好 @zd5043039119, 我们完全同意你的提议/反馈，欢迎直接在此仓库 创建一个 Pull Request 来解决这个问题。请务必填写 Pull Request 内的预设模板，提供改动所需相应的测试用例、文档等，并确保 CI 通过，我们会尽快进行 Review，提前感谢和期待您的贡献！