rfc: add Interface resource + controller and initial provider setup

[felix-kaestner]

Everything in internal/provider/openconfig/ except the files: gen.go, gen.sh, client.go, provider.go, .gitignore are generated by ygnmi. Don't be scared by the number of lines changed.

[afritzler]

Regarding tool installation: we are using in basically all our projects the following approach to install tools into a local (gitignored) bin folder: https://github.com/ironcore-dev/metal-operator/blob/main/Makefile#L267-L270

I would suggest we do it the same way here. We should refrain from running global go install in hack/gen scripts or having clis as dependendies e.g. via a tools.go as this will blow up the go.mod.

[felix-kaestner]

or having clis as dependendies e.g. via a tools.go as this will blow up the go.mod.

So the go tool approach suggested by @Nuckal777 would also not be feasible for you?

[afritzler]

Regarding the go tool discussion: There is actually a good reason why the kubebuilder community is not using that approach (for now).

/ref kubernetes-sigs/kubebuilder#4412 (comment)

[felix-kaestner]

Regarding the go tool discussion: There is actually a good reason why the kubebuilder community is not using that approach (for now).

/ref kubernetes-sigs/kubebuilder#4412 (comment)

Okay, I see. As you are working on pinning the tools in a bin directory as part of #7 would you be fine if we keep it with go run [email protected] for this PR. In this way, we don't get in the way of each other and have the tools equally pinned.