mod: add skeleton

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/common/skeleton/whisper_item.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+import 'skeleton.dart';
+
+class WhisperItemSkeleton extends StatelessWidget {
+  const WhisperItemSkeleton({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final color = Theme.of(context).colorScheme.onInverseSurface;
+    return Skeleton(
+      child: ListTile(
+        leading: Container(
+          width: 45,
+          height: 45,
+          decoration: BoxDecoration(
+            shape: BoxShape.circle,
+            color: color,
+          ),
+        ),
+        title: UnconstrainedBox(
+          alignment: Alignment.centerLeft,
+          child: Container(
+            width: 100,
+            height: 11,
+            color: color,
+          ),
+        ),
+        subtitle: Container(
+          color: color,
+          width: 125,
+          height: 11,
+        ),
+        trailing: Container(
+          color: color,
+          width: 50,
+          height: 11,
+        ),
+      ),
+    );
+  }
+}