Add InputConnection app side tracing

This change adds tracing for the methods exposed by the InputConnection
interface. The tracing is added to the wrapper class used to handle
InputConnection implementations created by different apps.

Bug: 154348613
Test: flash a device
      record a trace with Perfetto at https://ui.perfetto.dev/#!/record
      visualize traces and duration of tracing tags
Change-Id: I6718aa3183c95fc6802d93137e22d21b71869cfc