fix: copy generated sources too

src/policy/mvnw

...get/generated-sources/grpc/context/ContextOuterClass.java

...target/generated-sources/grpc/context/ContextService.java

...et/generated-sources/grpc/context/ContextServiceBean.java

.../generated-sources/grpc/context/ContextServiceClient.java

...et/generated-sources/grpc/context/ContextServiceGrpc.java

...erated-sources/grpc/context/MutinyContextServiceGrpc.java

...nerated-sources/grpc/kpi_sample_types/KpiSampleTypes.java

.../target/generated-sources/grpc/monitoring/Monitoring.java

.../generated-sources/grpc/monitoring/MonitoringService.java

...erated-sources/grpc/monitoring/MonitoringServiceBean.java

...ated-sources/grpc/monitoring/MonitoringServiceClient.java

...erated-sources/grpc/monitoring/MonitoringServiceGrpc.java

...-sources/grpc/monitoring/MutinyMonitoringServiceGrpc.java

src/policy/target/generated-sources/grpc/policy/Policy.java

...cy/target/generated-sources/grpc/policy/PolicyAction.java

...erated-sources/grpc/service/MutinyServiceServiceGrpc.java

...policy/target/generated-sources/grpc/service/Service.java

...target/generated-sources/grpc/service/ServiceService.java

...et/generated-sources/grpc/service/ServiceServiceBean.java