Bug#953403: ITP: golang-k8s-sigs-structured-merge-diff -- Test cases and implementation for "server-side apply"

["Tong Sun" <suntong001@users.sourceforge.net>]

Package: wnpp
Severity: wishlist
Owner: Tong Sun <suntong001@users.sourceforge.net>

* Package name    : golang-k8s-sigs-structured-merge-diff
  Version         : 3.0.0-1
  Upstream Author : Kubernetes SIGs
* URL             : https://github.com/kubernetes-sigs/structured-merge-diff
* License         : Apache-2.0
  Programming Lang: Go
  Description     : Implementation for "server-side apply"

Structured Merge and Diff. It implements the Kubernetes "APPLY" operation, 
apart from the PUT/PATCH operations.

Dependency of github.com/google/go-containerregistry &
github.com/GoogleContainerTools/container-diff.