[Feature] Adjust position of datazoom slider

[ngoctuan001]

What problem does this feature solve?

1. Currently, the echarts datazoom 'slider' doesnt support position of the text compare to the handle. It would be nice if we can add a properties to control that

Currently:

Proposed support of changing position, such as bottom:

What does the proposed API look like?

`
dataZoom: [
{
type: 'slider',
textPosition: 'bottom' // <-- add this option
}

]
`

[Ovilia]

DataZoom provides textStyle instead of label, which means this is not intended to have complex customiztion like rotation or positioning. Adding this feature may break the current API so it may be hard to do so.

[github-actions]

This issue has been automatically marked as stale because it did not have recent activity. It will be closed in 7 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this issue.

[github-actions]

This issue has been automatically closed because it did not have recent activity. If this remains to be a problem with the latest version of Apache ECharts, please open a new issue and link this to it. Thanks!