Expose /all/ run() kwargs in Result/Promise #690
Description
This is one of those "could be considered a bugfix, could be considered a feature" things. Follows (kinda) from #682 as that exposed the need/lack here when it created Promise.
tl;dr a subset of run() kwargs are exposed explicitly in Result, such as command, pty etc - but a bunch are not - such as warn, hide, out_stream. It seems like it makes good sense to straight-up copy any and all kwarg values from run into the structures that emerge as Result, as well as Promise (insofar as the "what run did you come from?" property applies to both).