🎨 Use feature based folder structure

lib/core/services/udid.web.dart

@@ -0,0 +1,26 @@
+import 'dart:convert';
+
+import 'package:crypto/crypto.dart';
+import 'package:web/web.dart';
+
+Future<String> getUdid() async {
+  final userAgent = window.navigator.userAgent;
+  final bytes = utf8.encode(userAgent);
+  final hash = sha256.convert(bytes);
+  return hash.toString();
+}
+
+Future<String> getDeviceName() async {
+  final userAgent = window.navigator.userAgent;
+  if (userAgent.contains('Chrome') && !userAgent.contains('Edg')) {
+    return 'Chrome';
+  } else if (userAgent.contains('Firefox')) {
+    return 'Firefox';
+  } else if (userAgent.contains('Safari') && !userAgent.contains('Chrome')) {
+    return 'Safari';
+  } else if (userAgent.contains('Edg')) {
+    return 'Edge';
+  } else {
+    return 'Browser';
+  }
+}