CUE definitions for Kubernetes resources

How this was setup

1. cue mod init github.com/loewenstein/cue-kubernetes
2. go mod init github.com/loewenstein/cue-kubernetes
3. go get k8s.io/api/core/v1 && cue get go k8s.io/api/core/v1
4. go get k8s.io/api/apps/v1 && cue get go k8s.io/api/apps/v1
5. Add kubernetes/base.cue
6. Add kubernetes/ls_tool.cue
7. Add example/simple.cue