Extend am profile command to trace long running methods

Extend am profile lowoverhead command to take two more options to trace
long running methods for a specified duration.

Bug: 352518093
Test: tested with am profile lowoverhead start --longrunning
am profile lowoverhead start --longrunning --duration
Flag: com.android.art.flags.always_enable_profile_code

Change-Id: I151d47ada87288141c550af8cf165c3fa6f52e46