Move ApexBundleInfoProvider from apex/ to android/

This provider contains information about the contents of an apex and is
set during the post deps phase of top-level source and prebuilt apexes.

java.dexpreoptDisabled needs to distinguish between platform and apex
variants of a library to prevent creating duplicate ninja rules. It does
so by looking at ApexInfoProvider. This provider gets set on the ctx of
the java_library being dexpreopted.

In case of prebuilts, these rules are being moved to the top-level
prebuilt apexes. Move ApexInfoBundleProvider from apex to android so
that java.dexpreoptDisabled can consume this provider without running
into a golang circular dependency. (java.dexpreoptDisabled will use this
provider in the next CL of this stack).

Test: go build ./android ./apex
Change-Id: I665abd9d0591eeb17b273cc822beb20690e6af09