Open chat model credentials should be optional

OpenAI chat model

The idea is:

Please make the credentials for the OpenAI chat model optional, as we don’t need them for self hosted openai compatible endpoints :wink:

My use case:

self hosted openai compatible endpoints

I think it would be beneficial to add this because:

We can’t add this node without having an openai account with api access.

Any resources to support this?

Are you willing to work on this?