feat(editor): Migrate codemirror-lang-n8n-expression into this monorepo (no-changelog) (#9087)

Co-authored-by: Iván Ovejero <ivov.src@gmail.com>

packages/@n8n/codemirror-lang/.eslintrc.cjs

@@ -0,0 +1,14 @@
+const sharedOptions = require('@n8n_io/eslint-config/shared');
+
+/**
+ * @type {import('@types/eslint').ESLint.ConfigData}
+ */
+module.exports = {
+	extends: ['@n8n_io/eslint-config/base'],
+
+	...sharedOptions(__dirname),
+
+	ignorePatterns: [
+		'src/expressions/grammar*.ts'
+	]
+};