deepcopy: add interface deepcopy funcs

- add DeepCopyObject() to runtime.Object interface
- add DeepCopyObject() via deepcopy-gen
- add DeepCopyObject() manually
- add DeepCopySelector() to selector interfaces
- add custom DeepCopy func for TableRow.Cells

pkg/apis/imagepolicy/types.go

@@ -23,6 +23,7 @@ import (
 // +genclient=true
 // +nonNamespaced=true
 // +noMethods=true
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 // ImageReview checks if the set of images in a pod are allowed.
 type ImageReview struct {