Structure StrictMode violations as Throwables

All violations of StrictMode now inherit from one central Violation
class. This unlocks adding penaltyCallback(Violation).
Parsing strings is no longer required to infer what type of violation
something is.
Violation classes have no need to be loaded in Zygote as only developers
opt-in to this feature and will see violations.

Cross-binder thread violation perf test:
before
2872331
2574093
2481208
after
1938227
1742714
2654538

Bug: 64258734
Test: cts-tradefed run cts-dev --module CtsOsTestCases --test
android.os.cts.StrictModeTest
Change-Id: I1971feb03ff77cf297c940cacee62fadb5b8422c