Azure OpenAI encoder

[MichaelAnckaert]

Problem

Azure OpenAI can't be used with this library. I stumbled upon this issue when I tried to implement the Azure OpenAI client for use with the canopy-sdk.

Solution

This PR implements the dense encoder using the Azure OpenAI embeddings. I subclassed a new encoder from the existing OpenAIEncoder and used the AzureOpenAI client.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Infrastructure change (CI configs, etc)
• Non-code change (docs, etc)
• None of the above: (explain here)

Test Plan

No specific tests were added as the existing OpenAIEncoder tests should cover all use cases.

[acatav]

Thanks @MichaelAnckaert for your contribution. Can you please add tests? we'll make sure all required env vars will be available in CI via github secrets

[acatav]

@MichaelAnckaert Thanks for you contribution! we wanted to merge this PR ASAP so we added tests and changed the code to align with this project high level design.

[igiloh-pinecone]

LGTM!

old