Added details for chats with participants list

lib/widget/largeProfilePictureView.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+import 'package:photo_view/photo_view.dart';
+
+import '../model/endpointData.dart';
+
+class LargeProfilePictureView extends StatelessWidget {
+  final String username;
+  const LargeProfilePictureView(this.username, {super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text("Profilbild"),
+      ),
+      body: PhotoView(
+        imageProvider: Image.network("https://${EndpointData().nextcloud().full()}/avatar/$username/1024").image,
+        backgroundDecoration: BoxDecoration(color: Theme.of(context).colorScheme.surface),
+      ),
+    );
+  }
+}