3.2.0-beta,重构很大：升级springboot2.6.6、spring-cloud-alibaba 2021.1、mybatisplus3.5.1、代码规范部分重构

jeecg-boot/jeecg-boot-starter/jeecg-boot-starter-job/src/main/java/org/jeecg/boot/starter/job/annotation/EnableXxlJob.java

@@ -0,0 +1,18 @@
+package org.jeecg.boot.starter.job.annotation;
+
+import org.jeecg.boot.starter.job.config.XxlJobConfiguration;
+import org.springframework.context.annotation.Import;
+
+import java.lang.annotation.*;
+
+/**
+ * @author zyf
+ */
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Inherited
+@Import({ XxlJobConfiguration.class })
+public @interface EnableXxlJob {
+
+}