Add additional google search grounding features

[Godrules500]

Feature Description

With google vertex grounding, it returns the sources it used to gather its information. That is something google requires to be displayed and I would like for these to be added.

Thanks!

Use Case

When someone searches real-time information, google requires me to display the sources and the google search html they send to me.

Additional context

No response

[lgrammel]

#3426