Allow definition of form references on none start events for Camunda 8 BPMN models

[VonDerBeck]

Problem you would like to solve

When using the desktop modeler I'm currently able to define form references on user tasks:

Works as expected. 👍

Now I would like to do the same for none start events. In order to define the start form required to start the process. Currently I have to edit the XML in order to achieve this:

    <bpmn:startEvent id="StartEvent_ApplicationReceived" name="Application received">
      <bpmn:extensionElements>
        <zeebe:formDefinition formId="Form_StartApplication" />
      </bpmn:extensionElements>
      <bpmn:outgoing>Flow_1lo5qbn</bpmn:outgoing>
    </bpmn:startEvent>

Sadly I'm not allowed to use zeebe:formDefinition in element templates, otherwise I would have had at least a workaround.

This significantly hinders on-premise development with the Desktop Modeler. Is this complicated to fix? I would very much appreciate to have this solved in the near future.

Proposed solution

Allow definition of form references on none start events for Camunda 8 BPMN models.

Alternatives considered

Allow usage of type zeebe:formDefinition in element templates.

Additional context

No response