feat: add view models for all entities

Client/Domain/Common/NotifyPropertyChanged.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Common
+{
+    public class NotifyPropertyChanged : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler? PropertyChanged;
+        public void OnPropertyChanged([CallerMemberName] string prop = "")
+        {
+            if (PropertyChanged != null)
+            {
+                PropertyChanged(this, new PropertyChangedEventArgs(prop));
+            }
+        }
+    }
+}