⚡ Improve post detail page first time loading

lib/widgets/loading_indicator.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+import 'package:gap/gap.dart';
+import 'package:get/get.dart';
+
+class LoadingIndicator extends StatelessWidget {
+  const LoadingIndicator({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 24),
+      color: Theme.of(context).colorScheme.surfaceContainerLow.withOpacity(0.8),
+      child: Row(
+        mainAxisAlignment: MainAxisAlignment.center,
+        crossAxisAlignment: CrossAxisAlignment.center,
+        children: [
+          const SizedBox(
+            height: 16,
+            width: 16,
+            child: CircularProgressIndicator(strokeWidth: 2.5),
+          ),
+          const Gap(8),
+          Text('loading'.tr)
+        ],
+      ),
+    );
+  }
+}

lib/widgets/posts/post_item.dart

@@ -250,6 +250,7 @@ class _PostItemState extends State<PostItem> {
           AppRouter.instance.pushNamed(
             'postDetail',
             pathParameters: {'id': item.id.toString()},
+            extra: item,
           );
         }
       },