Is your feature request related to a problem? Please describe.
Add click interaction on legend items.
Ideally used to hide/show a series.

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Describe alternatives you've considered

Additional context

Kibana Cross Issues
elastic/kibana#21084

Checklist

• this request is checked against already exist requests
• every related Kibana issue is listed under Kibana Cross Issues list
• kibana cross issue tag is associated to the issue if any kibana cross issue is present