rewrite k8s sample controller using metac

[AmitKumarDas]

UseStory: As a developer I would like to compare writing controllers using client-go versus metac. This will help me understand / learn different concepts used in metac and at the same time provide me a fair analysis to compare metac's approach versus using other approaches (read libraries, toolkits, programming languages, etc).

Possible Solution: It will be ideal to rewrite sample controller using below combinations to provide options to teams/individuals to help them in their final decision making process:

1. different approaches

• config vs. custom resource
• web based hooks vs inline hooks
• composite controller vs. generic controller

2. multiple programming languages

Refer - https://github.com/kubernetes/sample-controller

[AmitKumarDas]

https://github.com/AmitKumarDas/metac/pull/92