Separated app into three layers, cleaned up leftovers

Birdmap.DAL/Entities/User.cs

@@ -0,0 +1,18 @@
+namespace Birdmap.DAL.Entities
+{
+    public enum Roles
+    {
+        User,
+        Admin,
+    }
+
+    public class User
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public byte[] PasswordHash { get; set; }
+        public byte[] PasswordSalt { get; set; }
+
+        public Roles Role { get; set; }
+    }
+}