Moving shared classes to common.pip package 5/N

PipBoundsAlgorithm, PipBoundsState, PipKeepKlearAlgorithm,
PipPinchResizingAlgorithm, PipSnappAlgorithm and PipDisplayLayoutState
are being moved to the common.pip package.

Pip2Module is also being updated to return a non-null
PipTransitionController in PipModule

Bug: 293306185
Test: mp sysuig
Test: m -j ArcSystemUI

Change-Id: Icdd55540a5b186913991cce0d710708f70d03b72
Merged-In: Icdd55540a5b186913991cce0d710708f70d03b72