Group Bars together in grouped mode

[ezrafree]

Is your feature request related to a problem? Please describe. I am trying to implement a custom tooltip when the user hovers over a group of bars in a groupMode="grouped" Bar chart.

Describe the solution you'd like Unless I'm missing something, grouped bars should be grouped together in an SVG group element (ie. a <g> tag).

Describe alternatives you've considered Alternatively, a custom tooltip layer could be created, if only the tooltip could have access to the indexBy value.

Additional context No additional context.