Add command r/command r plus via Azure Marketplace

[jayfk]

Describe the feature or potential improvement

Getting the warning "Langfuse was not able to parse the LLM model. The LLM call will be recorded without model name. Please create an issue so we can fix your integration: https://github.com/langfuse/langfuse/issues/new/choose"

We are using Command R and Command R Plus via the Azure Marketplace: https://azuremarketplace.microsoft.com/en/marketplace/apps/cohere.cohere-command-r-plus-offer?tab=Overview

Currently via langchain:

chat = ChatCohere(
            base_url="<snip>",
            cohere_api_key="<snip>",
        )

Additional information

No response

[marcklingen]

thanks for sharing this issue, we'll try to address this in the next iteration of our langchain integration