Databricks-ai-bridge

Highlights
- Adding integration with databricks-openai
- Introducing [api docs](https://api-docs.databricks.com/python/databricks-ai-bridge/index.html)

Improvements
- Improving `VectorSearchRetrieverTool` API in both langchain and openai by introducing automatic description and resources needed to log the model
- Introducing model as an argument to be passed to ChatDatabricks in Langchain and deprecating notice endpoint to confer with the schema in Langchain.

This is a patch release that includes bugfixes.

Bug fixes:

- Update Genie API polling logic to account for COMPLETED query state (16, prithvikannan)

Initial version of databricks-ai-bridge and databricks-langchain packages

Features:

- Support for Databricks AI/BI Genie via the `databricks_langchain.GenieAgent` API in `databricks-langchain`
- Support for most functionality in the existing `langchain-databricks` under `databricks-langchain`. Specifically, this
release introduces `databricks_langchain.ChatDatabricks`, `databricks_langchain.DatabricksEmbeddings`, and
`databricks_langchain.DatabricksVectorSearch` APIs.