J.C. Zhong

Some systems may have the metastore as the source of truth for the table description, as well as the table schema. This change is to add the support of syncing...

Use [JSONPatch](https://jsonpatch.com/) for streaming instead of returning the whole json object every time. https://js.langchain.com/docs/modules/model_io/output_parsers/types/json_functions#streaming

Add UI tutorial for AI assistant features to help user to be aware of the new AI assistant feature and how to use it.