The shared CI workflow runs `npm run lint` (ESLint) and `npm run format:check`
(Prettier) but neither config file was present in the template repo. ESLint
was failing with "ESLint couldn't find a configuration file."
Add both configs matching the pattern used in other plugins in the org:
- .eslintrc.js extends @headlamp-k8s/eslint-config (provided by @kinvolk/headlamp-plugin)
- .prettierrc.js uses @headlamp-k8s/eslint-config/prettier-config
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Gandalf the Greybeard