[Improvement] Support schema traversal for Lance `describeTable` API

### What would you like to be improved?

According to the latest [document](https://github.com/lance-format/lance-namespace/blob/main/docs/src/client/operations/models/DescribeTableRequest.md), `describeTable` supports loading a specific version of the table schema, which is yet supported by the Gravitino Lance REST service. Besides, all APIs that has concept `version` have been skipped, like the alter table API, we'd need to implement the right syntax.

### How should we improve?

_No response_

Start with the linked Lance DescribeTableRequest documentation and the Gravitino Lance REST service implementation. Trace describeTable handling and the other APIs that use version, then determine the required syntax; done means schema traversal and version-aware operations are supported consistently.

Written by the indexing model from the issue text.