feat: GA of Kustomize and K8s manifests support (#1172)

This is the GA version of the helm-x integration #673 developed last year.

You get all the following benefits without an extra helm plugin:

- Ability to add ad-hoc chart dependencies/aliases, without forking the chart (Fixes #876 )
- Ability to patch resulting K8s resources before installing the helm chart
- Ability to install a kustomization as a chart (Requires `kustomize` binary to be available in `$PATH`
- Ability to install a directory of K8s manifests as a chart
- etc.

pkg/state/state_run.go

@@ -38,9 +38,7 @@ func (st *HelmState) scatterGather(concurrency int, items int, produceInputs fun
 
 	for w := 1; w <= concurrency; w++ {
 		go func(id int) {
-			st.logger.Debugf("worker %d/%d started", id, concurrency)
 			receiveInputsAndProduceIntermediates(id)
-			st.logger.Debugf("worker %d/%d finished", id, concurrency)
 			waitGroup.Done()
 		}(w)
 	}