Guided decoding integration for autolabel

[DhruvaBansal00]

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[DhruvaBansal00]

@nihit @tuxracer heads up here - we have to remove all instances of additionalProperties from the supplied JSON Schema for refuel models only due to a restriction from lm-format-enforcer (the backend we use for guided decoding). However, since OpenAI requires us sending this parameter (https://platform.openai.com/docs/guides/structured-outputs/supported-schemas) we can't just ignore it. Added additional methods for removing them post schema generation. Flagging this mostly since this small things breaks inference and we should push lm-format-enforcer to fix this so that client side code is cleaner.

Issue in lm-format-enforcer being tracked here: noamgat/lm-format-enforcer#129