Feat/add azure openai

[Anna-Xiong]

Description

1. Method 1, update llm_to_use and let user configure langchain wrapper themseleves
   • add docs on how to integrate with Azure OpenAI
   • VizroAI use LLM from langchain and it can integrates with Azure OpenAI :https://python.langchain.com/docs/integrations/llms/azure_openai

Here is how one can change to AzureOpenAI using approach added in docs:

# Import Azure OpenAI and VizroAI
from langchain_openai import AzureOpenAI
from vizro_ai import VizroAI

# Create an instance of Azure OpenAI
# Replace the deployment name with your own
llm = AzureOpenAI(
    deployment_name="td2",
    model_name="gpt-3.5-turbo-instruct",
)

# Update llm_to_use to Azure OpenAI
vizro_ai = VizroAI()
vizro_ai.llm= llm

2.Alternatively we can change vizro_ai.chains._llm_models to include wrapper of AzureOpenAI, instead of letting user change llm_to_use attribute.

Screenshot

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[huong-li-nguyen]

Is this PR still relevant?

[maxschulz-COL]

Is this PR still relevant?

Yes, it just is on hold for some other refactoring

[Anna-Xiong]

closed as the the new vizro class refactoring changes how to add open ai, this is the new pr to address this issue https://github.com/mckinsey/vizro/pull/443