Export individual properties and entries

[pinussilvestrus]

Is your feature request related to a problem? Please describe

In the 0.x series of the properties panel, it was possible to re-use existing, individual properties and compose them in a custom properties provider.

import ConditionalProps from "bpmn-js-properties-panel/lib/provider/camunda/parts/ConditionalProps.js";

This is not possible anymore as we restrict the exports of the library to the properties provider and the hooks (cf. index.js).

Re-using single property definitions without using the existing properties provider might be a use case we did not focus on while making the migration to the new framework. This is baked by this recent forum thread.

Describe the solution you'd like

Make it easier to re-use single properties, e.g. by exporting them.

Describe alternatives you've considered

Do nothing as this is not something we want because the properties only make sense in the respective properties provider.

I'd argue against that as the properties definitions are built to also work independently.

Additional context

Cf. this forum post

[pinussilvestrus]

Current workaround - copy and paste the individual entries: https://codesandbox.io/s/properties-panel-custom-conditional-props-qolu1x