ci: use ESLint for linting, instead of XO (which uses ESLint internally)

The main reasion is to support linting in an Neovim environment, which needs to be able to call ESLint directly. See also the https://github.com/vidavidorra/eslint-config project which exposes the ESLint configuration, while still getting the configuration and all rules from XO.

Author: jdbruijn

.github/lint-staged.js

@@ -1,5 +1,5 @@
 const config = {
-  '*.{ts,tsx,js,jsx}': ['xo --fix', () => 'ava'],
+  '*.{ts,tsx,js,jsx}': ['eslint --fix', () => 'ava'],
   '*.{vue,css,less,scss,html,htm,json,md,markdown,yml,yaml}':
     'prettier --write',
 };

README.md

@@ -63,6 +63,7 @@ Please [create an issue](https://github.com/vidavidorra/commitlint-plugin-functi
 Refer to the [contributing guide](https://github.com/vidavidorra/.github/blob/main/CONTRIBUTING.md) for detailed information about other contributions, like pull requests.
 
 [![Conventional Commits: 1.0.0](https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow?style=flat-square)](https://conventionalcommits.org)
+[![Linter](https://img.shields.io/badge/Linter-ESLint-4B32C3?logo=eslint&style=flat-square)](https://eslint.org/)
 [![XO code style](https://shields.io/badge/code_style-5ed9c7?logo=xo&labelColor=gray&style=flat-square)](https://github.com/xojs/xo)
 [![Code style](https://img.shields.io/badge/code_style-Prettier-ff69b4?logo=prettier&style=flat-square)](https://github.com/prettier/prettier)
 

eslint.config.js

@@ -0,0 +1 @@
+export {default} from '@vidavidorra/eslint-config';