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

feat(emailer): add Postmark and Resend providers

backend/Modules/Identity/Models/RoleModel.cs

@@ -0,0 +1,7 @@
+namespace Hutopy.Modules.Identity.Models;
+
+public class RoleModel
+{
+    public Guid Id { get; set; }
+    public string? Name { get; set; }
+}