/// <summary>
 /// Добавить пользователя
 /// </summary>
 /// <param name="user">Пользователь</param>
 /// <param name="token">Токен пользоват</param>
 /// <returns></returns>
 public async Task AddUser(UserPrincipal user, string token)
 {
     UserExtended userToAdd = new UserExtended()
     {
         UserExtendedId = user.Guid.Value,
         FirstName      = user.GivenName,
         LastName       = user.Surname,
         Login          = user.SamAccountName,
         Token          = token,
         RoleId         = DefaultRole()
     };
     await _context.AddAsync <UserExtended>(userToAdd);
 }