add admin account

Program.cs

@@ -55,10 +55,10 @@ namespace _2021_backend
                         context.SaveChanges();
                     }
                     var usr = new User();
-                    usr.Name = config["ADMIN_USERNAME"];
+                    usr.Name = "administrator";
                     usr.isManager = true;
                     usr.Secret = EvaCryptoHelper.Password2Secret(config["ADMIN_PASSWORD"]);
-                    usr.stuID = "zjueva";
+                    usr.stuID = config["ADMIN_USERNAME"]; ;
                     Console.WriteLine(usr.Id.ToString());
                     context.Users.Add(usr);
                     context.SaveChanges();