Add workflow for carvel tests
Add workflow for carvel tests

- For now we simply run npm linting and tests
- Relates #4527

spring-cloud/spring-cloud-data,jvalkeal/spring-cloud-dataflow,spring-cloud/spring-cloud-dataflow,jvalkeal/spring-cloud-dataflow,jvalkeal/spring-cloud-data,spring-cloud/spring-cloud-dataflow,spring-cloud/spring-cloud-dataflow,jvalkeal/spring-cloud-dataflow,jvalkeal/spring-cloud-data,spring-cloud/spring-cloud-data,jvalkeal/spring-cloud-dataflow,jvalkeal/spring-cloud-data,spring-cloud/spring-cloud-dataflow,jvalkeal/spring-cloud-dataflow,spring-cloud/spring-cloud-data,spring-cloud/spring-cloud-dataflow