structured data rendering

** Please make sure you read the contribution guide and file the issues in the right place. **
[Contribution guide.](https://google.github.io/adk-docs/contributing-guide/)

**Is your feature request related to a problem? Please describe.**
I would like to be able to render structured data within the adk web UI.

**Describe the solution you'd like**
For example, being able to print out a dataframe or the result of SQL query.
Then being able to scroll up & down within the table which is rendered.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.