[INTEGRATIONS-0.5] Integrate LLMs of Snowflake as Model

[blythed]

https://docs.snowflake.com/en/developer-guide/snowpark-ml/reference/1.5.0/api/model/snowflake.cortex.Complete

Deliverable

• Open source plugin with a Model wrapper for the LLM.

In order to preserve consistency with out other LLM implementations, it should work with pydantic types.
Please research: openai.pydantic_function_tool - how can we apply this to the output of other LLMs?

[kartik4949]

Important links for reference

https://docs.snowflake.com/en/user-guide/snowflake-cortex/llm-functions#using-snowflake-cortex-llm-functions-with-python

https://docs.snowflake.com/en/developer-guide/snowflake-ml/snowpark-ml#label-snowpark-ml-get-started