chore: add scripts

Author: mnahkies

integration-tests/typescript-nextjs/package.json

@@ -6,7 +6,9 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "next lint",
+    "clean": "rm -rf ./.next && rm -rf ./src/api",
+    "validate": "tsc -p ./tsconfig.json"
   },
   "dependencies": {
     "next": "14.1.4",