ci: Setup biome and pre-commit hooks for formatting (no-changelog) (#10795)

Co-authored-by: Tomi Turtiainen <10324676+tomi@users.noreply.github.com>

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

@@ -8,7 +8,5 @@ module.exports = {
 
 	...sharedOptions(__dirname),
 
-	ignorePatterns: [
-		'src/expressions/grammar*.ts'
-	]
+	ignorePatterns: ['src/expressions/grammar*.ts'],
 };

packages/@n8n/codemirror-lang/package.json

@@ -24,7 +24,8 @@
     "test": "jest",
     "lint": "eslint . --ext .ts --quiet",
     "lintfix": "eslint . --ext .ts --fix",
-    "format": "prettier --write --ignore-path ../../.prettierignore src test"
+    "format": "biome format --write src test",
+    "format:check": "biome ci src test"
   },
   "peerDependencies": {
     "@codemirror/language": "*",