"Refactor" should use the "code-davinci-edit-001" model

[jakehemmerle]

Great extension! Thanks for making it. Really looking forward to the code being open sourced for privacy purposes and so contributing is easier.

A suggestion is that the new Codex editing model is used for refactoring code,

https://platform.openai.com/docs/guides/code/editing-code

[davila7]

moved to discussion