Add UserCreated hook.

src/Infrastructure/BotSharp.Abstraction/Users/IAuthenticationHook.cs

@@ -8,4 +8,5 @@ public interface IAuthenticationHook
     Task<User> Authenticate(string id, string password);
     void AddClaims(List<Claim> claims);
     void BeforeSending(Token token);
+    Task UserCreated(User user);
 }

src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs

@@ -1,4 +1,3 @@
-using BotSharp.Abstraction.Repositories;
 using BotSharp.Abstraction.Users.Models;
 using Microsoft.Extensions.Configuration;
 using Microsoft.IdentityModel.Tokens;
@@ -57,6 +56,12 @@ public class UserService : IUserService
         _logger.LogWarning($"Created new user account: {record.Id} {record.UserName}");
         Utilities.ClearCache();
 
+        var hooks = _services.GetServices<IAuthenticationHook>();
+        foreach (var hook in hooks)
+        {
+            await hook.UserCreated(record);
+        }
+
         return record;
     }