Support using swagger specs/openapi specs to generate tools for agents.

[sharanyabhat]

In AutoGen AgentChat, it would be highly beneficial if we could pass a Swagger JSON file or OpenAPI specification directly to an agent (e.g. AssistantAgent), which could then automatically convert the defined endpoints into callable tools.

This would allow agents to leverage existing REST APIs seamlessly to answer user queries, without requiring manual tool creation or wrapper code.

Currently, this kind of functionality is available in MCP, where OpenAPI/Swagger specs can be ingested and exposed as tools for agents. Extending similar support to AgentChat would simplify API integration especially in multi-agent workflows.