feat(docs): migrate documentation site into monorepo (#5912)

apps/docs/src/components/integrations/adding.tsx

@@ -0,0 +1,8 @@
+export const AddingIntegration = () => {
+  return (
+    <p>
+      You can find how to add the integration on the <a href="/docs/management/integrations">Integrations Management</a>{" "}
+      documentation page.
+    </p>
+  );
+};