Goal: Ability to navigate to a subprocess definition by opening it in a new editor

Backgound: This task is the replicate of JBPM-9597 but targeting kogito scope, instead of BC

Scope: Kogito channels, at least VSCode expected

TBD: The main gap here is still the lack of any index or lookup service to be availabe to map process' ids to fs paths (eg: vscode workspace). Some research and conversations around this are still in progress.

• VSCode - deal with file paths for (sub) processes
  • VSCode API - https://code.visualstudio.com/api/references/vscode-api#workspace
    • FS Watcher - https://code.visualstudio.com/api/references/vscode-api#FileSystemWatcher
    • FS search / finder (pagination)
    • + parse process_id from bpmn file
  • (Pre) Population of the reusable subproces selection dropdown? (BC is doing it, at project level, although missing to figure out what to do on VSCode and other channels)