Currently, all the kogito showcases (dmn,bpmn, scenario simulation) are basically a copy and paste of Michael's first showcases. We should create on a kie-wb-common a base kogito showcase that will have the shared code among all editors.

This base showcase could have two versions: one that will be the base for vscode distribution (no filesystem access and no buttons on the UI) and the second version would be with a open/save button and git filesystem access.

The end result of this JIRA is a base showcase inside the kie-wb-common module that will be used by all other editors.
The first version of this is not a working showcase, rather a library containing classes/dependencies that are common for all other ones; then each actual showcase should include it as a dependency and provide only specific modifications/implementations if needed.