Allow to use toReference method from outside, in ex. kn plugins

[cardil]

client/pkg/kn/commands/source/binding/binding.go

Line 77 in c503b88

func toReference(subjectArg string, namespace string) (*tracker.Reference, error) {

Writing a kn-event plugin I wanted to parse the addressable in the same way as it is parsed in kn source binding --subject option. To be able to do it, this function needs to be moved to a public place. Maybe knative.dev/client/pkg/util is a good place?

[cardil]

/assign

[rhuss]

@cardil How urgent is it ? I'm asking because I'm on the way (albeit slowly) to move shared code into a dedicated repository to support reuse and break cyclic dependencies --> #1039

It might still take a bit, but that will the eventual location where we should put the parsing code.

[cardil]

I wanted that to finish my kn-event poc. Either way this method needs to be public in order to enable reuse.

So, answering your question. I would like to do it as soon as possible. Than, I'm happy to follow up when the code gets transferred to other repo.