First pass at a great workflow RFC to rule them all.

@micgo it's one of the reasons why I think we need to not put a future possible workflow in the RFC. We have two dominant workflows in the wild - we need to make those two come closer together in a way we can support, and then we need to innovate behind the scenes. That may bring us a third way, but we'll have a much better time getting both adoption of that way and possible tooling to port if we need it.

I think in large organizations, or ones with complex infrastructure needs, you naturally flip to the independent software project model as you move quicker, because it's the only way to stay sane. I'm not calling it out here, though.