chore: deprecate ResourceSystem (#17217)

Deprecates `ResourceSystem`. It's a large collection of unrelated things, and violates the principle of least privilege because to get access to low-security stuff like various statistics, you also get access to serious-security stuff like crypto keys.

We should eventually break it up and remove it, but the least we can do for now is not make the problem worse.

scripts/typegen/rbacobject.gotmpl

@@ -16,6 +16,7 @@ var (
 		{{- range $action, $value := .Actions }}
 		//  - "{{ actionEnum $action }}" :: {{ $value.Description }}
 		{{- end }}
+		{{- .Comment }}
 		Resource{{ $Name }} = Object {
 			Type: "{{ $element.Type }}",
 		}