【调整包结构】调整实体类包结构

byit-myth-core/myth-admin-core/src/main/java/com/byit/job/MythJobFlowVersion.java → byit-myth-core/myth-admin-core/src/main/java/com/byit/model/MythJobFlowVersion.java

-package com.byit.job;
+package com.byit.model;
 
 import lombok.*;