[Feature Request] Support for Downloading Remote Assets

[liblaf]

Thanks for creating cometx --- it's been helpful for downloading experiments from Comet-ml! The tool works perfectly for assets stored directly in Comet.

I've noticed that cometx currently doesn't download remote assets (e.g., files stored as links to external storage). When running cometx download, only locally stored Comet assets are fetched, while remote assets are skipped.

It would be valuable if cometx could download remote assets logged by:

exp.log_remote_asset("https://example.com/path/to/data.obj", "data.obj")

This would complete the experiment archiving workflow, especially for large experiments where assets are stored elsewhere.

Thank you again for this useful tool! I'd be happy to help test any implementations.