[metrics/incremental] add package loading info in ANR and crash metrics

On ANR or crash, ProcessRecord will obtain the package loading info from
Package Manager and log it as part of the Westworld metrics "ANROccurred".

BUG: 162600251
Test: atest CtsStatsdAtomHostTestCases:android.cts.statsdatom.statsd.UidAtomTests#testANROccurred
Change-Id: I4b527d731c59c6590771f898c26bfeacb16e6ad5