upgrade to ESLint 9+

Author: mourner

eslint.config.js

@@ -0,0 +1,11 @@
+import config from "eslint-config-mourner";
+
+export default [
+	...config,
+	{
+		rules: {
+			'no-sequences': 0,
+			'no-useless-assignment': 0
+		}
+	}
+];