More granular control over supported 3rd party API provider features

[xl0]

Feature Description

I've noticed that I have to use the "strict" mode with OpenAI to get the usage when streaming.
I would love to see more granular control, for example

createOpenAI({
    ...
    apiCompatibility: {
         stream_usage: true;
         [  ... possible other features in the future ... ]
    }
});

### Use Case

_No response_

### Additional context

_No response_