Add 90b llama-3.2 model for better performance

[bitsnaps]

Add support for llama-3.2-90b-vision-preview model from Groq.

[dustinwloring1988]

@bitsnaps thank you for adding this.

[bitsnaps]

@dustinwloring1988 , recently Groq changed the listing of models, they're now providing two list of models: production-models which includes frontier models (like llama-3.3-70b-versatile at the moment), and Preview Models for models that are intended for evaluation purposes only (like llama-3.2-90b-vision-preview), suggest keep only production ready models, or give the user the choice if he want to experiment with previous (or newly created) models.