first commit

Models/ActivityLog.cs

@@ -0,0 +1,18 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Fitness_core_BE.Models
+{
+    public class ActivityLog
+    {
+        [Key]
+        public Guid ActivityLogId { get; set; }
+        public Guid FKUserId { get; set; }
+        [ForeignKey("FKUserId")]
+        public virtual User User { get; set; }
+        public string UserName { get; set; }
+        public bool IsAdmin { get; set; }
+        public string Description { get; set; }
+        public DateTime Timestamp { get; set; } = DateTime.UtcNow;
+    }
+}