Add consent user event.

src/Squidex.Domain.Users/IUserEvents.cs

@@ -12,5 +12,7 @@ namespace Squidex.Domain.Users
     public interface IUserEvents
     {
         void OnUserRegistered(IUser user);
+
+        void OnConsentGiven(IUser user);
     }
 }

src/Squidex.Domain.Users/NoopUserEvents.cs

@@ -11,6 +11,10 @@ namespace Squidex.Domain.Users
 {
     public sealed class NoopUserEvents : IUserEvents
     {
+        public void OnConsentGiven(IUser user)
+        {
+        }
+
         public void OnUserRegistered(IUser user)
         {
         }

src/Squidex/Areas/IdentityServer/Controllers/Account/AccountController.cs

@@ -123,6 +123,8 @@ namespace Squidex.Areas.IdentityServer.Controllers.Account
 
             await userManager.UpdateAsync(user);
 
+            userEvents.OnConsentGiven(user);
+
             return RedirectToReturnUrl(returnUrl);
         }