Move command-line switches to the front.
Move command-line switches to the front.

On MacOS command-line switches like '-rf' need to be provided before any
positional arguments like the name of the directory to delete.

Bug: 205971016
Test: ./studiow --clean w (on MacOS)
Change-Id: Ic8527f656162fb53d379ec6e48556f0ca6b22173

AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx