[Call Timing] Set telecom routing times

This CL sets the following times in the call's intent extras:
  - the time that telecom started processing the call
  - the time that telecom finished processing things like call blocking
    and was ready to connect to the UI

The time values are sent to the dialer using call's intent extras.

Bug: 28202119
Change-Id: Ic7f43c2d6defca38ff0491b5b470b2684ab868af