Bug: Curator Does not Support Function Calling

[richardbespoke]

In openai_online_request_processor.py (should be the same for all openai request processors e.g. batch):

response_message = response["choices"][0]["message"]["content"]

This only handles the case when the effective output is at the "content" key which is most cases but for function calling the output would look like the following:

ChatCompletionMessage(content=None, role='assistant', function_call=None, tool_calls=[ChatCompletionMessageToolCall(id='call_xb7QwwNnx90LkmhtlW0YrgP2', function=Function(arguments='{"location":"Glasgow, Scotland","format":"celsius"}', name='get_current_weather'), type='function')])

We should add a case to handle tool_calls if its value is non-empty.