chore: docs stubbing

docs/live-preview/frontend.mdx

@@ -0,0 +1,13 @@
+---
+title: Implementing Live Preview in your app
+label: Frontend Implementation
+order: 20
+desc: NEED TO WRITE 
+keywords: NEED TO WRITE
+---
+
+- Talk about in detail how it works on the frontend
+- How you should write your frontend to be "safe" and not break if there is no data filled in a required field, etc.
+- Your UI should be reactive to new props 
+- Loading states
+- Etc.