Feature request: allow opting-in to step builders for Java

Hi, I would like to be able to opt-in to using step builders when generating Java code. Currently, mandatory parameters are passed directly to the builder’s constructor; however, there’s another pattern—step builders—that could be used instead, wherein mandatory parameters must be provided one by one, ultimately yielding an interface through which the final optional parameters can be provided. The pros/cons of each approach have been discussed elsewhere, but it would be interesting if Guardrail allowed generating either, ideally through some configuration option.