feat: add prettier and eslint rules

Author: alex-guoba

.eslintrc.json

@@ -1,3 +1,3 @@
 {
-  "extends": "next/core-web-vitals"
+  "extends": ["next/core-web-vitals", "next", "prettier", "eslint:recommended"]
 }

.prettierrc.json

@@ -0,0 +1,8 @@
+{
+  "trailingComma": "es5",
+  "semi": true,
+  "tabWidth": 2,
+  "singleQuote": false,
+  "plugins": ["prettier-plugin-tailwindcss"],
+  "printWidth": 120
+}