Init model module

model/lib/account/password.dart

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+import 'package:equatable/equatable.dart';
+
+class Password with EquatableMixin {
+  final String value;
+
+  Password(this.value);
+
+  @override
+  List<Object> get props => [value];
+}

model/lib/account/user_name.dart

@@ -0,0 +1,10 @@
+import 'package:equatable/equatable.dart';
+
+class UserName with EquatableMixin {
+  final String userName;
+
+  UserName(this.userName);
+
+  @override
+  List<Object> get props => [userName];
+}