Remove ParsingPackageImpl

Pushes all of the members down into PackageImpl to simplify the class
structure. Manually combines the Booleans classes and creates a new
Booleans2 for the overflow above 64 values.

Also manually merges the Parcelable implementations.

Formatting is a mess, but that can be addressed in a future change that
migrates to Codegen and reorganizes the members.

Test: atest com.android.server.pm.test.parsing.parcelling

Change-Id: I2e82f0ba51e4e94ffc24ac98d967d600370efff5