Add project files.

ConstructorApp.EntityLayer/Entities/Slider.cs

@@ -0,0 +1,23 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace ConstructorApp.EntityLayer.Entities
+{
+    public class Slider
+    {
+        [Key]
+        public int SliderID { get; set; }
+
+        [StringLength(100)]
+        public string? Location { get; set; }
+
+        [StringLength(100)]
+        public string? Sqm { get; set; }
+
+        [StringLength(100)]
+        public string? PriceInfo { get; set; }
+
+        [StringLength(100)]
+        public string? ImageUrl { get; set; }
+
+    }
+}