Add support out of the box for Table Comments, Column Comments, and cluster_by.

[WilliamMize]

It would be beneficial if we could attach the table comments and column comments to the DLT streaming tables as additional metadata. This would benefit not only anyone consuming data from the tables but also the "Data Intelligence Platform" for more optimal AI retrieval. Cluster_by is in preview but will go to the release/standard channel on DLT eventually.