The CF API V3 defines [app-features](https://v3-apidocs.cloudfoundry.org/version/3.190.0/index.html#app-features) resource, which gets more and more adoption. E.g. the [RFC-0030](https://github.com/cloudfoundry/community/blob/main/toc/rfc/rfc-0030-add-support-for-file-based-service-binding.md) is making use of this but there are also other use cases. That is why, it will be great to support this API in cf-java-client.