Is your feature request related to a problem? Please describe.
To help developers or users easily get the information of all the bundles in the model-zoo, it would be nice to add script APIs to get the manifest of bundles and details of the specific bundle.

Similar to the existing script APIs:
https://github.com/Project-MONAI/MONAI/blob/dev/monai/bundle/scripts.py#L154