Add pre and post callbacks to ActivityLifecycleCallbacks

For each lifecycle event exposed in
ActivityLifecycleCallbacks, an additional pair of
methods have been added to give developers a reliable
callback before and after each lifecycle event.

The existing callbacks cannot be used for this as they
are called as part of the super implementation and
therefore can run at any point in relation to the
other code in the Activity.

Test: manual
BUG: 116118635
Change-Id: If91f3f3248f9d7cf14aac2fe24ce14d92b8d05d3