In many use cases (especially packaging tests/CI) it's desirable to install native package created by `apkg build`. Original intention was like this: ``` apkg build | apkg install -C -F - ``` But it turns out `apkg build` may produce stdout noise from installation of build depends so this doesn't always work. - [x] Fix all external tool invocations across `apkg` to not spam stdout. If seeing output is really desire outside of error, extend `run` wrapper with ability to pipe stdout to stderr. - [x] Extend tests to ensure `apkg build | apkg install -F -` always works.