Reimplement verify_uses_libraries.sh in manifest_check.py.

Previously there were two different scripts that did similar things:
1) build/soong/scripts/manifest_check.py
2) build/make/core/verify_uses_libraries.sh

Both scripts extracted <uses-library> tags and `targetSdkVersion` from
the manifests of Java modules, but 1) worked for XML manifests, and 2)
worked for APKs. This CL reimplements the functionality from 2) in 1),
so that one script can handle both XML manifests and APKs.

Bug: 132357300

Test: lunch cf_x86_64_phone-userdebug && m && launch_cvd \
      adb wait-for-device && adb root && adb logcat \
      | grep -E 'ClassLoaderContext [a-z ]+ mismatch'
      # empty grep output, no errors

Change-Id: Id1b66e4f3f30f307dba70cb111c7571762cb546a