[Timeline/TimelineItem] Add customizability to TimelineItems

[adam-warzel-sap-signavio]

Is your feature request related to a problem?

Hello, we would like to be able to able to customize how a Timeline item looks, specifically the title and the "speech bubble" around it. It seems there is no way to do that now.

Describe the solution you'd like

A CSS shadow part for the title of an item, so that it can be separately styled. A property, for example something like showBubble (or CSS shadow part), for the speech bubble, so that it can be hidden.

Organization

SAP Signavio

Declaration

• [X] I’m not disclosing any internal or sensitive information.