add: Prettier Formatter

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "tabWidth": 2,
+  "useTabs": false
+}

package.json

@@ -19,6 +19,7 @@
     "@types/react-dom": "18.0.5",
     "eslint": "8.19.0",
     "eslint-config-next": "12.2.0",
+    "prettier": "2.7.1",
     "typescript": "4.7.4"
   }
 }