return list of tags in /hub-cache
Add a list of tags in /hub-cache used to refresh the Hub's datasets cache. For now, we add the "croissant" tag if `dataset-info` exists and is complete (all the configs).

We can further build on this to add other tags, like webdataset.
return list of tags in /hub-cache: Add a list of tags in /hub-cache used to refresh the Hub's datasets cache. For now, we add the "croissant" tag if `dataset-info` exists and is complete (all the configs).

We can further build on this to add other tags, like webdataset.