chore(lint): set up ESLint

Added ESLint dependencies and ESLint configuration.

eslint.config.js

@@ -0,0 +1,19 @@
+import js from '@eslint/js';
+import { defineConfig } from 'eslint/config';
+import pluginVue from 'eslint-plugin-vue';
+import globals from 'globals';
+
+export default defineConfig([
+    {
+        files: ['**/*.{js,mjs,cjs,vue}'],
+        plugins: { js },
+        extends: ['js/recommended'],
+        languageOptions: {
+            globals: {
+                ...globals.browser,
+                ...globals.node
+            }
+        }
+    },
+    pluginVue.configs['flat/essential'],
+]);