Merge pull request #52753 from munnerz/sample-controller

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

sample-controller: add example CRD controller

**What this PR does / why we need it**:

Adds a sample-controller example repository

fixes #52752

**Special notes for your reviewer**:

This is currently based on the sttts:sttts-codegen-scripts branch and should not be merged until that is (ref https://github.com/kubernetes/kubernetes/pull/52186)

**Release note**:

```
Add sample-controller repository
```

/cc @sttts @nikhita @colemickens

Kubernetes-commit: 9a7800f7d2efb88b397674672ac56f898826cf7c

vendor/github.com/go-openapi/jsonpointer/.pullapprove.yml

@@ -0,0 +1,13 @@
+approve_by_comment: true
+approve_regex: '^(:shipit:|:\+1:|\+1|LGTM|lgtm|Approved)'
+reject_regex: ^[Rr]ejected
+reset_on_push: false
+reviewers:
+  members:
+  - casualjim
+  - chancez
+  - frapposelli
+  - vburenin
+  - pytlesk4
+  name: pullapprove
+  required: 1