ci: update eslint and prettier

Author: CCherry07

.eslintrc.js

@@ -1,5 +1,14 @@
 module.exports = {
-  // rules: {
-  //   "@typescript-eslint/explicit-function-return-type": "off",
-  // }
+  env: {
+    browser: true,
+    es2021: true,
+  },
+  extends: ['plugin:vue/vue3-recommended', 'prettier', 'plugin:prettier/recommended'],
+  parserOptions: {
+    ecmaVersion: 'latest',
+    sourceType: 'module',
+  },
+  rules: {
+    "@typescript-eslint/explicit-function-return-type": "off",
+  }
 };