Make location of stream.tif output consistent across models

[davemfish]

From Stacie,

Currently, SWY and NDR save to intermediate, SDR saves to main output folder.

[jagoldstein]

@newtpatrol advocates for the main model output folder as the destination, not intermediate

[newtpatrol]

Thanks Jesse. Yes, the main output folder makes most sense to me since we tell people how important it is to get the stream network as close to reality as possible, look at it every time in trainings, and it explains some of the main patterns of the other results.