[Feature] Update K8s cluster deployment

[roytman]

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Currently K8s cluster deployment is done from kind - the root project subdirectory.

• It contains only Makefile, Readme and dependencies files. All installation scripts are in ROOT_DIR/scripts/kind
• It can be used to deploy dependencies (KFP, KubeRay) on an external K8s cluster, so its name is not always true.
• Its Makefile contains KFP version settings, despite that it is defined now in .make.defaults.

The suggestion is to move the content of the kind directory into scripts/kind and possibly rename the last dir to something like scripts/k8s_setup

Add a Make rule that describes and prints the relevant environment variables, similar to extra-help in .make.transformers

Because the scripts directory doesn't have the Makefile, the Kubernetes cluster setup/cleanup will be separated from the root make directives.

Are you willing to submit a PR?

• [ ] Yes I am willing to submit a PR!