Set up to migrate requestBugreport flavors to use bugreport API

Add initial set up code to migrate requestBugreport,
requestBugreportWithDescription, requestWifiBugreport and
requestTelephonyBugreport to use the new Bugreport API.

Prepare the intent (to trigger API workflow) but do not send. Not
sending the intent keeps the workflow same as before.

This set up helps to move away from directly setting system properties
(dumpstate.options.title and dumpstate.options.description).

Bug: 139415553
Test: build and flash. Taking a bugreport works as usual
Change-Id: I0b57643ff8f4eadb281e1d7788171ef751a01b79