Add project files.

ConstructorApp.DtoLayer/ContactUsDto/GetContactUsDto.cs

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+namespace ConstructorApp.DtoLayer.ContactUsDto
+{
+    public class GetContactUsDto
+    {
+        public int ContactusID { get; set; }
+        public DateTime Date { get; set; } = DateTime.Now;
+        public string? NameSurname { get; set; }
+        public string? Mail { get; set; }
+        public string? Phone { get; set; }
+        public string? MessageContent { get; set; }
+        public bool Status { get; set; }
+    }
+}