Update eslint to flat config

eslint.config.js

@@ -1,22 +1,28 @@
-// eslint.config.js
+// eslint.config.js (flat config)
-export default {
+import configRecommended from "eslint-config-eslint";
-    env: {
+import configPrettier from "eslint-config-prettier";
-      node: true,
+import pluginPrettier from "eslint-plugin-prettier";
-      es2021: true,
+import globals from "globals";
-    },
+import unusedImports from "eslint-plugin-unused-imports";
-    extends: [
+import js from "@eslint/js";
-      'eslint:recommended',
+
-      'plugin:prettier/recommended',
+export default [
-    ],
+  {
-    parserOptions: {
+    languageOptions: {
-      ecmaVersion: 'latest',
+      ecmaVersion: "latest",
-      sourceType: 'module',
+      sourceType: "module",
+      globals: {
+        ...globals.node,
+      },
     },
     rules: {
-      // Add your custom rules here
+      "no-console": "warn",
-      'no-console': 'warn',
+      "no-unused-vars": "warn",
-      'no-unused-vars': 'warn',
+      "unused-imports/no-unused-imports": 1,
-      // Example: 'semi': ['error', 'always']
     },
-  };
+  },
-  
+  js.configs.recommended,
+  pluginPrettier.configs.recommended,
+  configPrettier,
+  unusedImports.configs.recommended,
+];