Improve scheduler auto outline

A few small tweaks to the scheduler

1. Allow devices to be applied to all functions at once (e.g., host(*);)
2. Allow auto-outline to be run on a selection of functions, instead of the entire module, and change the return to be labeled by the name of the function outlined from

requested review from @rarbore2

assigned to @aaronjc4

merged

mentioned in commit 495b1390