[type:feat] shenyu client heartbeat #11975

Job	Run time
build (shenyu-integrated-test-apache-dubbo)	12m 39s
build (shenyu-integrated-test-grpc)	13m 23s
build (shenyu-integrated-test-http)	14m 13s
build (shenyu-integrated-test-https)	13m 52s
build (shenyu-integrated-test-motan)	13m 47s
build (shenyu-integrated-test-spring-cloud)	15m 7s
build (shenyu-integrated-test-sofa)	15m 25s
build (shenyu-integrated-test-websocket)	13m 11s
build (shenyu-integrated-test-rewrite)	13m 7s
build (shenyu-integrated-test-combination)	15m 48s
build (shenyu-integrated-test-sdk-apache-dubbo)	14m 40s
build (shenyu-integrated-test-sdk-http)	12m 21s
	2h 47m 33s

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