Rebuild data storage system so that database dependencies get taken into account

src/HopFrame.Database/Models/User.cs

@@ -1,9 +1,28 @@
+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+
 namespace HopFrame.Database.Models;
 
-public sealed class User : IPermissionOwner {
+public class User : IPermissionOwner {
+    
+    [Key, Required, MinLength(36), MaxLength(36)]
     public Guid Id { get; init; }
+    
+    [MaxLength(50)]
     public string Username { get; set; }
+    
+    [Required, MaxLength(50), EmailAddress]
     public string Email { get; set; }
+    
+    [Required, MinLength(8), MaxLength(255), JsonIgnore]
+    public string Password { get; set; }
+    
+    [Required]
     public DateTime CreatedAt { get; set; }
-    public IList<Permission> Permissions { get; set; }
+    
+    public virtual IList<Permission> Permissions { get; set; }
+    
+    [JsonIgnore]
+    public virtual IList<Token> Tokens { get; set; }
+    
 }