Feature Request: Custom banner comment

[ErikBrendel]

I would like to define a different banner comment via CLI arguments.

The current one with "just update the pydantic models and then re-run the script" works well as a default comment, but in more complex use cases (e.g. when integrating this script into a build pipeline, into npm scripts, or otherwise hiding it from the developer) it might be useful to adjust this comment to properly reflect the intended way of re-starting the script.