[Feature] rich text options for "text" graphic

[mnischay]

What problem does this feature solve?

I have created a multi placeable tooltip on a graph.. https://github.com/mnischay/echarts-multiple-scooters-example

i need to style the text part of the custom tooltip.. currently using graphic "text" options, but I cant seem to style it like the default tooltip

What does the proposed API look like?

graphic: [ {type: 'text', formatter: ..., rich: { } }]

[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!