add eslint and prettier conf

.eslintrc.js

@@ -0,0 +1,14 @@
+module.exports = {
+  env: {
+    node: true,
+  },
+  extends: [
+    "eslint:recommended",
+    "plugin:vue/vue3-recommended",
+    "prettier",
+  ],
+  rules: {
+    // override/add rules settings here, such as:
+    // 'vue/no-unused-vars': 'error'
+  }
+}

.prettierrc.json

@@ -0,0 +1,7 @@
+{
+  "bracketSpacing": false,
+  "bracketSameLine": false,
+  "semi": false,
+  "singleQuote": true,
+  "singleAttributePerLine": true
+}

package.json

@@ -16,9 +16,13 @@
     "@vitejs/plugin-vue": "^5.0.5",
     "babel-loader": "^9.1.3",
     "css-loader": "^7.1.2",
+    "eslint": "^9.19.0",
+    "eslint-config-prettier": "^10.0.1",
+    "eslint-plugin-vue": "^9.32.0",
     "file-loader": "^6.2.0",
     "mini-css-extract-plugin": "^2.9.1",
     "postcss-loader": "^8.1.1",
+    "prettier": "3.4.2",
     "sass": "^1.78.0",
     "sass-loader": "^16.0.1",
     "source-map-loader": "^5.0.0",
@@ -28,5 +32,9 @@
     "webpack": "^5.94.0",
     "webpack-cli": "^5.1.4",
     "webpack-notifier": "^1.15.0"
+  },
+  "scripts": {
+    "lint": "ESLINT_USE_FLAT_CONFIG=false ./node_modules/.bin/eslint --ext .js,.vue --ignore-path .gitignore --fix --debug frontend",
+    "format": "./node_modules/.bin/prettier frontend --write"
   }
 }