Etherpad ESLint Shareable Config

ESLint shareable config used by Etherpad and its plugins. Version 4.0.5 (stable). This package provides multiple config presets (etherpad, etherpad/node, etherpad/browser, etherpad/tests, etc.) and a plugin-oriented config that automatically applies the correct presets based on file location. It includes a workaround for ESLint's modern module resolution issue (ESLint #3458). Key differentiator: tailored specifically for Etherpad ecosystem, handles backend/frontend/test code separately, and requires explicit peer dependency on ep_etherpad-lite to satisfy Node.js plugin checks.