[core] Allow using helper to use TxCaptchaHelper in CLI LoginSolver

mirai-core-api/src/jvmMain/kotlin/utils/LoginSolver.jvm.kt

@@ -203,10 +203,10 @@ public class StandardCharImageLoginSolver @JvmOverloads constructor(
         logger.info { "[SliderCaptcha] Slider captcha required. Please solve the captcha with following link. Type ticket here after completion." }
         logger.info { "[SliderCaptcha] @see https://github.com/project-mirai/mirai-login-solver-selenium" }
         logger.info { "[SliderCaptcha] @see https://docs.mirai.mamoe.net/mirai-login-solver-selenium/" }
-        logger.info { "[SliderCaptcha] 或者输入 TxCaptchaHelper 来使用 TxCaptchaHelper 完成滑动验证码" }
-        logger.info { "[SliderCaptcha] Or type `TxCaptchaHelper` to resolve slider captcha with TxCaptchaHelper.apk" }
+        logger.info { "[SliderCaptcha] 或者输入 helper 来使用 TxCaptchaHelper 完成滑动验证码" }
+        logger.info { "[SliderCaptcha] Or type helper to resolve slider captcha with TxCaptchaHelper.apk" }
         logger.warning { "[SliderCaptcha] TxCaptchaHelper 的在线服务疑似被屏蔽，可能无法使用。TxCaptchaHelper 现已无法满足登录QQ机器人，请在以下链接下载全新的验证器" }
-        logger.warning { "[SliderCaptcha] The service of `TxCaptchaHelper` might be blocked. We recommend you to download the new login solver plugin in below link." }
+        logger.warning { "[SliderCaptcha] The service of TxCaptchaHelper might be blocked. We recommend you to download the new login solver plugin in below link." }
         logger.warning { "[SliderCaptcha] @see https://github.com/KasukuSakura/mirai-login-solver-sakura" }
         logger.info { "[SliderCaptcha] Captcha link: $url" }
 
@@ -229,7 +229,7 @@ public class StandardCharImageLoginSolver @JvmOverloads constructor(
         }
 
         return input().also {
-            if (it == "TxCaptchaHelper" || it == "`TxCaptchaHelper`") {
+            if (it == "TxCaptchaHelper" || it == "`TxCaptchaHelper`" || it == "helper" || it == "`helper`") {
                 return runTxCaptchaHelper()
             }
             logger.info { "[SliderCaptcha] 正在提交中..." }