Selection migration for "bring" / "move"

- Make it so that if the user has selection(s) within the source during a "bring" / "move", the selections will be moved to the corresponding place in the new target, similar to how we do for "clone"
   - We'd probably want to combine this one with #190 so that you could say "take arg air bring funk back"

See #414 for more context and an example use case