Refactor how MODULES-IN-* is defined

Unlike the previous performance patches, this does change the ninja
file, shrinking build-aosp_crosshatch.ninja on aosp-master from 393MB to
387MB, while reducing kati runtime from 28.6s to 27.7s.

Previously, MODULES-IN-art would depend on every target defined under
art/***. After this change, it only depends on the modules names that
were directly defined under it, and depends on the MODULES-IN-art-*
for its subfolders.

Bug: 158488548
Test: mmma system/core/adb
Test: mmma system/core
Change-Id: Idfe80f707738faae4777e0d6dc9fd08014775696