[Improvement] Add Support for Inspecting Tables in Datalake Formats like Iceberg

### What would you like to be improved?

In addition to regular table functions, datalake table formats offer various capabilities for inspecting tables.

For instance, Iceberg can display valid snapshots for a table or show a table's current file manifests.

However, Gravitino catalogs currently lack this support, and there is no designated place for it in the General API hierarchy.

Incorporating this support into Gravitino would help users better manage their datalakes.

### How should we improve?

_No response_

Start by reviewing Gravitino's General API hierarchy and the existing catalog table functions to determine where datalake inspection belongs. Compare the capabilities described for Iceberg, including valid snapshots and current file manifests. Done means a defined API location and support for inspecting these table details in Gravitino catalogs.

Written by the indexing model from the issue text.