AAPT: Add --no-version-transitions flag

Add a new flag to disable versioning of Transition related XMLs.
Transition support library will use this to handle these XMLs on older
API levels.

Test: make libaapt_tests AaptTestAppOne
Bug: 34427868
Change-Id: I66e81cca049e71ef6704177b2ca21c9cdeaff78f