Add copy paste between files

[sam-sepiol1]

Is your feature request related to a problem? Please describe.

I cannot copy and paste elements from different file. It works on web editor, but I need to be able to version my bpmns

Describe the solution you'd like

I'd like to be able to copy and paste element between files

[nikku]

We could check if we can incorporate this module for cross-BPMN editor copy-paste.

[nikku]

Contributions welcome ⭐