Allow default state, reset state, and nesting for binary states

Every state atom can have a customized default state and reset state by
annotating atoms.proto.

Binary state atoms (such as WakelockStateChanged)  can turn on nested
counting by annotating atoms.proto as well.

Generated atoms_info.h before change: https://paste.googleplex.com/4626190063108096
Generated atoms_info.h after change: https://paste.googleplex.com/5410938863747072
Generated atoms_info.cpp before change: https://paste.googleplex.com/5726061016907776
Generated atoms_info.cpp after change: https://paste.googleplex.com/5540983737417728

Test: bit statsd_test:*
Change-Id: I845616f103e013a7927de869b8e8228cfb244090