copilot-node-server is no longer maintained

[dylnclrk]

Problem

As of last week jfcherng/copilot-node-server#24, it sounds like copilot-node-server will no longer be maintained.
https://www.npmjs.com/package/@github/copilot-language-server is the recommended replacement.

[jcs090218]

Yeah, this makes sense. There is a copilot client built-in to lsp-mode as well; see https://github.com/emacs-lsp/lsp-mode/blob/master/clients/lsp-copilot.el.

[dylnclrk]

FWIW, I tried swapping out for the official language server and I'm seeing a bunch of Warning (lsp-mode): Unknown notification: didChangeStatus messages. Not too familiar w/ LSP, but do we need to set up some additional handling for these notifications?

[suzuki]

Hi, I just tried to replace the LSP server with the official GitHub Copilot one.
What do you think of this pull request?
#4710