refactor(yvan-lcc-bench): 重构工作台启动逻辑并添加日志记录

- 在 StartWorkbench 类中添加了 @Slf4j 注解，用于日志记录
- 优化了 Spring应用程序的启动逻辑，使用 ApplicationContextInitializedEvent 来初始化 SpringContext.HOLDER
- 这种改进提高了代码的可维护性和可测试性，同时确保了应用程序的正常启动

servo/src/main/java/com/yvan/workbench/StartWorkbench.java

@@ -1,5 +1,6 @@
 package com.yvan.workbench;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration;
@@ -7,6 +8,8 @@ import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
 import org.springframework.boot.autoconfigure.elasticsearch.ElasticsearchRestClientAutoConfiguration;
 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
+import org.springframework.boot.context.event.ApplicationContextInitializedEvent;
+import org.springframework.context.ApplicationListener;
 
 @SpringBootApplication(
         scanBasePackages = {
@@ -22,10 +25,12 @@ import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
                 MongoDataAutoConfiguration.class,
         }
 )
+@Slf4j
 public class StartWorkbench {
     public static void main(String[] args) {
         System.setProperty("polyglot.engine.WarnInterpreterOnly", "false");
         SpringApplication application = new SpringApplication(StartWorkbench.class);
-        SpringContext.HOLDER = application.run(args);
+        application.addListeners((ApplicationListener<ApplicationContextInitializedEvent>) event -> SpringContext.HOLDER = event.getApplicationContext());
+        application.run(args);
     }
 }