many fixes and improvements - rework for modules/ and common/

feat(emailer): add Postmark and Resend providers

backend/Modules/Creators/Data/Creator.cs

@@ -0,0 +1,32 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Hutopy.Modules.Creators.Data;
+
+public class Creator
+{
+    public Guid Id { get; set; }
+    
+    public Guid CreatedBy { get; set; } 
+    public DateTimeOffset CreatedAt { get; init; }   
+    public Guid? DeletedBy { get; set; }
+    public DateTimeOffset? DeletedAt { get; set; }
+    
+    /// <summary>
+    /// Soft‑delete flag (false by default, true once DeletedAt is set)
+    /// </summary>
+    public bool IsDeleted { get; private set; }   // private set → EF updates it
+
+    [MaxLength(2048)] public string? BannerUrl { get; set; }
+    [MaxLength(2048)] public string? PortraitUrl { get; set; }
+    public bool Verified { get; set; }
+    [MaxLength(256)] public required string Name { get; set; }
+    [MaxLength(128)] public required string Slug { get; set; }
+    [MaxLength(256)] public string? Title { get; set; }
+
+    [MaxLength(21)] public string? StripeAccountId { get; set; }
+    public bool IsStripeDetailsSubmitted { get; set; }
+    public bool IsStripePayoutReady { get; set; }
+    public bool IsStripeChargesEnabled { get; set; }
+    public Socials Socials { get; set; } = new();
+    public Presentation Presentation { get; set; } = new() { Description = "Welcome to my profile!" };
+}