I want label attributes to support multi-line text landscape

[daoke0818]

What problem does this feature solve?

When using a tree chart for a family tree, I want the label to display two lines vertically, one for the name and one for the rank.

What does the proposed API look like?

That corresponds to CSS rules：
writing-mode:horizontal-tb;
writing-mode:vertical-rl;
writing-mode:vertical-lr;

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[plainheart]

This feature looks beneficial. Perhaps, SVG renderer can do it through the writing-mode property in CSS. But now ECharts doesn't provide this option yet or the ability to specify the class name to enable the developer to control the style of charts by CSS.

[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!