feat: integrate Turnstile captcha verification in signup process

package.json

@@ -28,6 +28,7 @@
     "@ant-design/icons": "^6.0.0",
     "@hookform/resolvers": "^5.0.1",
     "@iconify/react": "^6.0.0",
+    "@marsidev/react-turnstile": "^1.1.0",
     "@radix-ui/react-slot": "^1.2.0",
     "@redocly/ajv": "^8.11.2",
     "@tanstack/react-query": "^5.74.4",