Add project files.

DTOs/ApiResponse.cs

@@ -0,0 +1,26 @@
+
+namespace LogisticsApp.Server.DTOs
+{
+    public class ApiResponse<T>
+    {
+        public bool Success { get; set; }
+        public string Message { get; set; } = string.Empty;
+        public T? Data { get; set; }
+
+        public ApiResponse(bool success, string message, T? data = default)
+        {
+            Success = success;
+            Message = message;
+            Data = data;
+        }
+    }
+
+    public class PagedResult<T>
+    {
+        public List<T> Items { get; set; } = new();
+        public int TotalCount { get; set; }
+        public int Page { get; set; }
+        public int PageSize { get; set; }
+        public int TotalPages { get; set; }
+    }
+}