Proposal for Apache Shenyu about logging-elasticsearch plugin

Apache Shenyu supports the use of elasticsearch, Kafka and rocketmq middleware to obtain gateway log information, but at present, it can only support the use of rocketmq. In this project,I will use reactor Java technology and elasticsearch related technology to complete the preparation of logging-elasticsearch plugin, so that Shenyu can store the log into the elasticsearch database and view and change the data through visualization technology.