Remove kStateAtomsInfo from atoms_info.

Use the annotation information in LogEvent/FieldValue instead.

- Initialize nested to true in FieldValue.mAnnotations

- Add filterPrimaryKey function to HashableDimensionKey for populating a
HashableDimensionKey with all FieldValues that have the primary key
annotation set.

- Create StateTrackers without checking if atom is a state atom. (We
  can't do this check anymore)

- Remove mAtomId, mStateField, mNested, mPrimaryFields, mDefaultState,
    mResetState members from StateTracker. Use the information passed in
    LogEvent in onLogEvent instead.

- Update tests to log annotations when logging events.

- Remote kStateAtomsFieldOptions from atoms_info.

- Make MetricProducer::mStateGroupMap const

- Rename handlePartialReset to clearStateForPrimaryKey

- Store "default" states in mStateMap. An entry in mStateMap means the
state is not kStateUnknown. Before, an entry in mStateMap meant the
state is not the "default" state.

- Consolidate all state change logic in updateStateForPrimaryKey()
    - remote StateTracker::updateState
    - handleReset and clearStateForPrimaryKey call
    updateStateForPrimaryKey for resetting and clearing of states
    respectively.

- Create a helper method for notifying StateTracker listeners

- Make StateManager::registerListener void

Bug: 151110842
Test: bit statsd_test:*
Change-Id: Ifb8371b213a178fcccaa484086fbdd283dbaec49