Add action type for deleting resource

Usually, we create all the resources used by a benchmark and delete them afterwards. However, there might be resources that are not created by us, but automatically in when execution the benchmark. For such cases, we an option for deleting resources as action.

A real world use case for this can be found in benchmarking Kafka Streams in combination with Strimzi. Kafka Streams creates Kafka topics for internal use, which result in created KafkaTopic resource objects. The safest way for deleting the Kafka topic is deleting the corresponding Kubernetes objects. While we could also perform an "exec" action using the Kafka client tools would also be possible, deleting the objects via Strimzi has the advantage that retrys etc. are already provided.