Transplant Logging to android.telecom

The initial commit of moving all of the logic into
android.telecom. Currently no functional changes, we are only adding a
temporary LogUtils class to ease the transition to this system over.

Test: Refactoring CL. All affected tests still pass.
Bug: 26571395
Change-Id: Iffdf7435ee70c7fce0e8ea85b576764b4c9d6eff