[Feature]: Add support for exposing agents via the Responses API.

[LearningGp]

AgentScope-Java is an open-source project. To involve a broader community, we recommend asking your questions in English.

Is your feature request related to a problem? Please describe.

Add support for exposing agents via the Responses API.

Describe the solution you'd like

Support exposing agents via Responses API, referencing agentscope-extensions-chat-completions-web.

Additional context

https://developers.openai.com/api/reference/resources/responses

[lynx009]

I want to help.

[LearningGp]

Please proceed. Feel free to leave a comment if you have any questions or need further clarification.