新增 yudao-spring-boot-starter-banner 组件，用于项目启动时打印开发文档、接口文档等

yudao-framework/yudao-spring-boot-starter-monitor/src/main/java/cn/iocoder/yudao/framework/tracer/config/YudaoTracerAutoConfiguration.java

@@ -45,6 +45,7 @@ public class YudaoTracerAutoConfiguration {
      * 创建 TraceFilter 过滤器，响应 header 设置 traceId
      */
     @Bean
+    @ConditionalOnClass(name = "javax.servlet.Filter")
     public FilterRegistrationBean<TraceFilter> traceFilter() {
         FilterRegistrationBean<TraceFilter> registrationBean = new FilterRegistrationBean<>();
         registrationBean.setFilter(new TraceFilter());