Choose a custom endpoint for the OpenAI credentials [GOT CREATED]

The idea is:

Dispose of a toggle to enter a custom OpenAI compatible endpoint in the OpenAI model credentials.

My use case:

Use any OpenAI compatible APIs with this node.

It would be very useful to be able to enter a custom endpoint to make use of any OpenAI compatible APIs.

This has been added and is available from n8n@1.73.0