docs: improved analytics and tracking (#13671)

* docs: improved analytics and tracking

* remove detailed feedback component

* remove ignore build script for api reference

* improvements

* fix pathname

www/apps/cloud/package.json

@@ -23,6 +23,7 @@
     "clsx": "^2.1.0",
     "docs-ui": "*",
     "next": "15.3.5",
+    "posthog-js": "^1.269.1",
     "react": "rc",
     "react-dom": "rc",
     "rehype-mdx-code-props": "^2.0.0",