Add classes for call events and a field for them in ParcelableCallAnalytics. Add classes for timing information on user-visible operations. Add the TelecomAnalytics class as the top-level object for analytics. Add log session timing information to the TelecomAnalytics class, independent of individual calls. Bug: 28623064 Change-Id: Ifee5fdf6b6b341869ff0ff26c4388d357e3d9922