Support Snowflake Cortex as one of the Runtime

[sgsshankar]

Prerequisites

• [x] I have checked the latest documentationand this feature doesn't exist
• [x] I have searched for similar feature requests and found none
• [x] I have linked to related issues or discussions in the description (if any exist)

Type of Improvement

New Functionality

Proposed Solution

Support running Azure OpenAI and other models in Snowflake Cortex as one of the Runtime for Prompty. It supports various Authentication mechanisms with Snowflake as well as the Cortex COMPLETE function similar to the standard Prompty Specification.

PR for the Feature is #246