[ADI][2/N] implementation of verifier controller and status tracker

+ VerifierController controls the binding of the verification service agent
+ VerificationStatusTracker manages the timeout status of a verification
+ If a verifier is connected, wait for the verifier response before starting the rest of the verification
+ Unit testing

Test: atest com.android.server.pm.verify.pkg.VerifierControllerTest
Test: atest com.android.server.pm.verify.pkg.VerificationStatusTrackerTest
Test: atest CtsPackageManagerTestCases:VerifierServiceTest

FLAG: android.content.pm.verification_service

Reverted changes: /q/submissionid:30469933-revert_verification_service_main

BUG: 360129103
BUG: 360129657

Merged-In: Ie60b15b84361f84fd64e3ec98b1d3e5955d328e5
Change-Id: Ie60b15b84361f84fd64e3ec98b1d3e5955d328e5