Update to gpt-4o-mini and latest model OpenAI

[gzileni]

This pull request introduces a significant refactor across multiple files to make various classes in the vanna package abstract by inheriting from Python’s ABC (Abstract Base Class). Additionally, it includes enhancements to the OpenAI_Chat class to improve configurability and default behavior. Below are the key changes grouped by theme:

Refactoring to Abstract Base Classes:

• Updated numerous classes to inherit from ABC to indicate that they are abstract and may include abstract methods. This change was applied to classes such as ZhipuAI_Chat, ZhipuAI_Embeddings, Cohere_Chat, Cohere_Embeddings, DeepSeekChat, FAISS, BigQuery_VectorStore, GoogleGeminiChat, Hf, Marqo_VectorStore, Mistral, MockEmbedding, MockLLM, OpenAI_Embeddings, OpenSearch_VectorStore, and OpenSearch_Semantic_VectorStore. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16]

Enhancements to OpenAI_Chat:

• OpenAI_Chat now inherits from ABC and includes new attributes (temperature, client, model, max_retries) with default values.
• Improved configurability by allowing max_retries and model to be set via the configuration. Defaults to gpt-3.5-turbo if no model is specified. [1] [2]
• Adjusted the __init__ method to include max_retries when initializing the OpenAI client.
• Enhanced the submit_prompt method to handle default model selection more robustly and clarified comments.

Cleanup and Minor Adjustments:

• Removed unnecessary blank lines in files such as anthropic_chat.py, auth.py, and others for better readability. [1] [2]
• Added missing imports for ABC in files where classes were updated to be abstract. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16]

This refactor improves the codebase by enforcing abstraction where appropriate, enhancing clarity, and making the OpenAI_Chat class more flexible and robust.

[llamapreview]

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