[Feature Request] Please support Structured Output for OpenAI models

[noahlatzel]

Please support the new "response_format" parameter type in OpenAI. The dropbox in the UI can be extended with a "json_schema"
option. The json_schema itself could then be described in a new file / within flow.dag.yaml. A small button could be added to the UI that appears when "json_schema" is selected and opens a small editor to define the response_format. Similar to how it is already done in "Azure AI Foundry Chat Playground"

Additional context
https://platform.openai.com/docs/guides/structured-outputs

from openai import OpenAI

client = OpenAI()

class CalendarEvent(BaseModel):
    name: str
    date: str
    participants: list[str]

completion = client.beta.chat.completions.parse(
    model="gpt-4o-2024-08-06",
    messages=[
        {"role": "system", "content": "Extract the event information."},
        {"role": "user", "content": "Alice and Bob are going to a science fair on Friday."},
    ],
    response_format=CalendarEvent,
)

event = completion.choices[0].message.parsed