perf(server): 设置嵌入式服务器线程名称

xxl-job-core/src/main/java/com/xxl/job/core/server/EmbedServer.java

@@ -104,6 +104,7 @@ public class EmbedServer {
             }
         });
         thread.setDaemon(true);    // daemon, service jvm, user thread leave >>> daemon leave >>> jvm leave
+        thread.setName("xxl-job, EmbedServer");
         thread.start();
     }