Add CLI support for listing notebook versions

Currently it is difficult to determine available notebook versions through the CLI.

The CLI supports submitting notebook outputs using:

-k <notebook>
-v <version>

However, there appears to be no API endpoint to retrieve notebook version history or determine the latest version programmatically.

For automation workflows, it would be useful to have a command such as:

kaggle kernels versions <kernel>

that lists notebook versions and their statuses.

Exposing notebook version metadata would enable:

• automation pipelines
• notebook-based competition submissions
• latest-version submission helpers
• tracking notebook execution history

Example output:

Version 1 COMPLETE
Version 2 COMPLETE
Version 3 RUNNING