docs(editor): add emacs editor plugin (oxc-project#18003)

I created an emacs package that implements integration with lsp mode as
an add-on.

https://github.com/nstfkc/lsp-oxlint.el

It's mostly written by Claude Code. I have tested it on Doom emacs it so
far works great.

---------

Signed-off-by: Enes Tüfekçi <enesxtufekci@gmail.com>
Signed-off-by: Alexander S. <sysix@sysix-coding.de>
Co-authored-by: Alexander S. <sysix@sysix-coding.de>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: 3 people

editors/README.md

@@ -12,4 +12,6 @@
 
 ## Third-Party
 
+[Emacs](https://github.com/nstfkc/lsp-oxlint.el)
+
 > We look forward to your contributions. Feel free to open a PR to add a link to this page if you are working on an IDE extension for Oxlint and/or Oxfmt.