Req to support Outputschema with structuredContent

[jkfnc]

Enhancement Description

Would be good to have output schema support via pydantic.

https://modelcontextprotocol.io/specification/draft/server/tools#structured-content

Use Case

No response

Proposed Implementation

[strawgate]

I went to look at implementing this -- the python sdk does not have the types to implement this yet but there is an open PR here modelcontextprotocol/python-sdk#685