[Feature] Is it possible to render a bar chart inside calendar chart?

### What problem does this feature solve?

I'm working with a calendar chart similar to the [calendar-pie example](https://echarts.apache.org/examples/en/editor.html?c=calendar-pie), where pie charts are rendered inside each day of the calendar. However, I want to render bar charts instead of pie charts within each day.
I've tried several approaches, but haven't been able to achieve the desired result.

Is this a limitation of the current library, or is there a specific way to implement this?

### What does the proposed API look like?

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