[type:feat] shenyu client heartbeat #11976

Job	Run time
build (shenyu-integrated-test-apache-dubbo)	12m 28s
build (shenyu-integrated-test-grpc)	13m 31s
build (shenyu-integrated-test-http)	13m 50s
build (shenyu-integrated-test-https)	13m 8s
build (shenyu-integrated-test-motan)	14m 10s
build (shenyu-integrated-test-spring-cloud)	15m 28s
build (shenyu-integrated-test-sofa)	15m 16s
build (shenyu-integrated-test-websocket)	13m 23s
build (shenyu-integrated-test-rewrite)	12m 48s
build (shenyu-integrated-test-combination)	15m 57s
build (shenyu-integrated-test-sdk-apache-dubbo)	14m 42s
build (shenyu-integrated-test-sdk-http)	13m 16s
	2h 47m 57s

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