Create post preview component

payload.config.ts

@@ -43,9 +43,8 @@ export default buildConfig({
     },
     livePreview: {
       url: ({ data, locale }) =>
-        //TODO: Rewrite to collection_slug/preview/
         `${process.env.BASE_URL}/preview${data.path}${locale ? `?locale=${locale.code}` : ''}`,
-      collections: [COLLECTION_SLUG_PAGE],
+      collections: [COLLECTION_SLUG_PAGE, COLLECTION_SLUG_POST],
     },
   },
   editor: lexicalEditor(),