refactor: extract base data for plugin, selector and rule data class #8091

Job	Run time
build (shenyu-integrated-test-k8s-ingress-http)	8m 21s
build (shenyu-integrated-test-k8s-ingress-grpc)	8m 45s
build (shenyu-integrated-test-k8s-ingress-websocket)	10m 1s
build (shenyu-integrated-test-k8s-ingress-apache-dubbo)	9m 27s
build (shenyu-integrated-test-k8s-ingress-motan)	13m 53s
	50m 27s

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