Kindsys: Target k8s style resource definitions (#67008)

Co-authored-by: sam boyer <sdboyer@grafana.com>

pkg/codegen/tmpl/core_resource.tmpl

@@ -0,0 +1,7 @@
+package {{ .PackageName }}
+
+// Resource is the wire representation of {{ .KindName }}. (TODO be better)
+type Resource struct {
+    {{- range .SubresourceNames }}
+	{{ . }} {{ . }} `json:"{{ . | ToLower }}"`{{end}}
+}