migrate remaining methods to UserManager

Oqtane.Server/Infrastructure/Interfaces/IUserManager.cs

@@ -5,6 +5,17 @@ namespace Oqtane.Infrastructure
 {
     public interface IUserManager
     {
+        User GetUser(int userid, int siteid);
+        User GetUser(string username, int siteid);
         Task<User> AddUser(User user);
+        Task<User> UpdateUser(User user);
+        Task DeleteUser(int userid, int siteid);
+        Task<User> LoginUser(User user, bool setCookie, bool isPersistent);
+        Task<User> VerifyEmail(User user, string token);
+        Task ForgotPassword(User user);
+        Task<User> ResetPassword(User user, string token);
+        User VerifyTwoFactor(User user, string token);
+        Task<User> LinkExternalAccount(User user, string token, string type, string key, string name);
+        Task<bool> ValidatePassword(string password);
     }
 }