New Textract Model Support

Hi! AWS released a new model over the last week that now has some new keys. I am getting a RotationAngle key in the geometry info that is breaking TRP's ability to parse the output and completely breaking.

I was wondering if there was a plan to add this new key to the pydantic model or if there is a way to allow extra keys across the whole TDocumentSchema model so that it does not break.