https://aider.chat/docs/usage.html (not a vscode plugin, but with other advantages even when using this editor)
https://docs.continue.dev/getting-started/overview
https://github.com/cline/cline
was pretty good too, but it had taken on too much in its latest version 2.0.0. In other words, it is too unstable at the moment (but probably worth looking at again later).